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Finding the Fourth Proportional to 8,862.74, 12,213.74 and 6,340.47

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Solution

The fourth proportional to 8,862.74, 12,213.74 and 6,340.47 is: 8,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862.74 : 12,213.74 = 6,340.47 : x
  2. Step 2: Convert to fraction form
    8,862.74/12,213.74 = 6,340.47/x
  3. Step 3: Cross multiply
    8,862.74x = 12,213.74 × 6,340.47
  4. Step 4: Simplify right side
    8,862.74x = 77,440,820.36
  5. Step 5: Solve for x
    x = 77,440,820.36/8,862.74
  6. Step 6: Final answer
    x = 8,737.80

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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.