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Finding the Fourth Proportional to 8,712.59, 12,023.69 and 4,935.92

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Solution

The fourth proportional to 8,712.59, 12,023.69 and 4,935.92 is: 6,811.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.59 : 12,023.69 = 4,935.92 : x
  2. Step 2: Convert to fraction form
    8,712.59/12,023.69 = 4,935.92/x
  3. Step 3: Cross multiply
    8,712.59x = 12,023.69 × 4,935.92
  4. Step 4: Simplify right side
    8,712.59x = 59,347,887.15
  5. Step 5: Solve for x
    x = 59,347,887.15/8,712.59
  6. Step 6: Final answer
    x = 6,811.74

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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.