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Finding the Fourth Proportional to 8,951.80, 12,326.70 and 7,377.16

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Solution

The fourth proportional to 8,951.80, 12,326.70 and 7,377.16 is: 10,158.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.80 : 12,326.70 = 7,377.16 : x
  2. Step 2: Convert to fraction form
    8,951.80/12,326.70 = 7,377.16/x
  3. Step 3: Cross multiply
    8,951.80x = 12,326.70 × 7,377.16
  4. Step 4: Simplify right side
    8,951.80x = 90,936,038.17
  5. Step 5: Solve for x
    x = 90,936,038.17/8,951.80
  6. Step 6: Final answer
    x = 10,158.41

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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.