Home / 8,472.02-12,680.43-7,663.70

Finding the Fourth Proportional to 8,472.02, 12,680.43 and 7,663.70

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Solution

The fourth proportional to 8,472.02, 12,680.43 and 7,663.70 is: 11,470.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.02 : 12,680.43 = 7,663.70 : x
  2. Step 2: Convert to fraction form
    8,472.02/12,680.43 = 7,663.70/x
  3. Step 3: Cross multiply
    8,472.02x = 12,680.43 × 7,663.70
  4. Step 4: Simplify right side
    8,472.02x = 97,179,011.39
  5. Step 5: Solve for x
    x = 97,179,011.39/8,472.02
  6. Step 6: Final answer
    x = 11,470.58

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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.