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Finding the Fourth Proportional to 4,988.60, 7,472.10 and 4,340.60

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Solution

The fourth proportional to 4,988.60, 7,472.10 and 4,340.60 is: 6,501.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.60 : 7,472.10 = 4,340.60 : x
  2. Step 2: Convert to fraction form
    4,988.60/7,472.10 = 4,340.60/x
  3. Step 3: Cross multiply
    4,988.60x = 7,472.10 × 4,340.60
  4. Step 4: Simplify right side
    4,988.60x = 32,433,397.26
  5. Step 5: Solve for x
    x = 32,433,397.26/4,988.60
  6. Step 6: Final answer
    x = 6,501.50

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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.