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Finding the Fourth Proportional to 8,943.71, 12,342.36 and 5,588.47

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Solution

The fourth proportional to 8,943.71, 12,342.36 and 5,588.47 is: 7,712.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.71 : 12,342.36 = 5,588.47 : x
  2. Step 2: Convert to fraction form
    8,943.71/12,342.36 = 5,588.47/x
  3. Step 3: Cross multiply
    8,943.71x = 12,342.36 × 5,588.47
  4. Step 4: Simplify right side
    8,943.71x = 68,974,877.73
  5. Step 5: Solve for x
    x = 68,974,877.73/8,943.71
  6. Step 6: Final answer
    x = 7,712.11

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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.