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Finding the Fourth Proportional to 7,472.67, 10,312.20 and 4,328.79

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Solution

The fourth proportional to 7,472.67, 10,312.20 and 4,328.79 is: 5,973.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.67 : 10,312.20 = 4,328.79 : x
  2. Step 2: Convert to fraction form
    7,472.67/10,312.20 = 4,328.79/x
  3. Step 3: Cross multiply
    7,472.67x = 10,312.20 × 4,328.79
  4. Step 4: Simplify right side
    7,472.67x = 44,639,348.24
  5. Step 5: Solve for x
    x = 44,639,348.24/7,472.67
  6. Step 6: Final answer
    x = 5,973.68

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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.