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Finding the Fourth Proportional to 8,708.88, 12,018.05 and 4,729.91

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Solution

The fourth proportional to 8,708.88, 12,018.05 and 4,729.91 is: 6,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.88 : 12,018.05 = 4,729.91 : x
  2. Step 2: Convert to fraction form
    8,708.88/12,018.05 = 4,729.91/x
  3. Step 3: Cross multiply
    8,708.88x = 12,018.05 × 4,729.91
  4. Step 4: Simplify right side
    8,708.88x = 56,844,228.87
  5. Step 5: Solve for x
    x = 56,844,228.87/8,708.88
  6. Step 6: Final answer
    x = 6,527.15

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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.