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Finding the Fourth Proportional to 30,872.41, 46,308.65 and 7,498.85

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Solution

The fourth proportional to 30,872.41, 46,308.65 and 7,498.85 is: 11,248.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,872.41 : 46,308.65 = 7,498.85 : x
  2. Step 2: Convert to fraction form
    30,872.41/46,308.65 = 7,498.85/x
  3. Step 3: Cross multiply
    30,872.41x = 46,308.65 × 7,498.85
  4. Step 4: Simplify right side
    30,872.41x = 347,261,351.02
  5. Step 5: Solve for x
    x = 347,261,351.02/30,872.41
  6. Step 6: Final answer
    x = 11,248.28

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.