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Finding the Fourth Proportional to 8,708.73, 12,018.27 and 4,931.91

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Solution

The fourth proportional to 8,708.73, 12,018.27 and 4,931.91 is: 6,806.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.73 : 12,018.27 = 4,931.91 : x
  2. Step 2: Convert to fraction form
    8,708.73/12,018.27 = 4,931.91/x
  3. Step 3: Cross multiply
    8,708.73x = 12,018.27 × 4,931.91
  4. Step 4: Simplify right side
    8,708.73x = 59,273,026.00
  5. Step 5: Solve for x
    x = 59,273,026.00/8,708.73
  6. Step 6: Final answer
    x = 6,806.16

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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.