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Finding the Fourth Proportional to 7,515.96, 10,372.08 and 4,531.20

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Solution

The fourth proportional to 7,515.96, 10,372.08 and 4,531.20 is: 6,253.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.96 : 10,372.08 = 4,531.20 : x
  2. Step 2: Convert to fraction form
    7,515.96/10,372.08 = 4,531.20/x
  3. Step 3: Cross multiply
    7,515.96x = 10,372.08 × 4,531.20
  4. Step 4: Simplify right side
    7,515.96x = 46,997,968.90
  5. Step 5: Solve for x
    x = 46,997,968.90/7,515.96
  6. Step 6: Final answer
    x = 6,253.09

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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.