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Finding the Fourth Proportional to 8,763.52, 13,146.24 and 2,920.64

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Solution

The fourth proportional to 8,763.52, 13,146.24 and 2,920.64 is: 4,381.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.52 : 13,146.24 = 2,920.64 : x
  2. Step 2: Convert to fraction form
    8,763.52/13,146.24 = 2,920.64/x
  3. Step 3: Cross multiply
    8,763.52x = 13,146.24 × 2,920.64
  4. Step 4: Simplify right side
    8,763.52x = 38,395,434.39
  5. Step 5: Solve for x
    x = 38,395,434.39/8,763.52
  6. Step 6: Final answer
    x = 4,381.28

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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.