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Finding the Fourth Proportional to 8,708.85, 12,018.17 and 4,729.93

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Solution

The fourth proportional to 8,708.85, 12,018.17 and 4,729.93 is: 6,527.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.85 : 12,018.17 = 4,729.93 : x
  2. Step 2: Convert to fraction form
    8,708.85/12,018.17 = 4,729.93/x
  3. Step 3: Cross multiply
    8,708.85x = 12,018.17 × 4,729.93
  4. Step 4: Simplify right side
    8,708.85x = 56,845,084.61
  5. Step 5: Solve for x
    x = 56,845,084.61/8,708.85
  6. Step 6: Final answer
    x = 6,527.28

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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.