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Finding the Fourth Proportional to 8,708.58, 12,018.09 and 4,729.95

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Solution

The fourth proportional to 8,708.58, 12,018.09 and 4,729.95 is: 6,527.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.58 : 12,018.09 = 4,729.95 : x
  2. Step 2: Convert to fraction form
    8,708.58/12,018.09 = 4,729.95/x
  3. Step 3: Cross multiply
    8,708.58x = 12,018.09 × 4,729.95
  4. Step 4: Simplify right side
    8,708.58x = 56,844,964.80
  5. Step 5: Solve for x
    x = 56,844,964.80/8,708.58
  6. Step 6: Final answer
    x = 6,527.47

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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.