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Finding the Fourth Proportional to 8,472.13, 12,708.23 and 4,726.22

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Solution

The fourth proportional to 8,472.13, 12,708.23 and 4,726.22 is: 7,089.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.13 : 12,708.23 = 4,726.22 : x
  2. Step 2: Convert to fraction form
    8,472.13/12,708.23 = 4,726.22/x
  3. Step 3: Cross multiply
    8,472.13x = 12,708.23 × 4,726.22
  4. Step 4: Simplify right side
    8,472.13x = 60,061,803.62
  5. Step 5: Solve for x
    x = 60,061,803.62/8,472.13
  6. Step 6: Final answer
    x = 7,089.34

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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.