Home / 8,272.20-11,415.72-4,495.40

Finding the Fourth Proportional to 8,272.20, 11,415.72 and 4,495.40

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Solution

The fourth proportional to 8,272.20, 11,415.72 and 4,495.40 is: 6,203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.20 : 11,415.72 = 4,495.40 : x
  2. Step 2: Convert to fraction form
    8,272.20/11,415.72 = 4,495.40/x
  3. Step 3: Cross multiply
    8,272.20x = 11,415.72 × 4,495.40
  4. Step 4: Simplify right side
    8,272.20x = 51,318,227.69
  5. Step 5: Solve for x
    x = 51,318,227.69/8,272.20
  6. Step 6: Final answer
    x = 6,203.70

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.