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Finding the Fourth Proportional to 2,950, 4,415.36 and 2,169.78

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Solution

The fourth proportional to 2,950, 4,415.36 and 2,169.78 is: 3,247.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,950 : 4,415.36 = 2,169.78 : x
  2. Step 2: Convert to fraction form
    2,950/4,415.36 = 2,169.78/x
  3. Step 3: Cross multiply
    2,950x = 4,415.36 × 2,169.78
  4. Step 4: Simplify right side
    2,950x = 9,580,359.82
  5. Step 5: Solve for x
    x = 9,580,359.82/2,950
  6. Step 6: Final answer
    x = 3,247.58

Related Problems

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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.