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Finding the Fourth Proportional to 8,687.85, 13,031.42 and 6,047.73

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Solution

The fourth proportional to 8,687.85, 13,031.42 and 6,047.73 is: 9,071.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.85 : 13,031.42 = 6,047.73 : x
  2. Step 2: Convert to fraction form
    8,687.85/13,031.42 = 6,047.73/x
  3. Step 3: Cross multiply
    8,687.85x = 13,031.42 × 6,047.73
  4. Step 4: Simplify right side
    8,687.85x = 78,810,509.68
  5. Step 5: Solve for x
    x = 78,810,509.68/8,687.85
  6. Step 6: Final answer
    x = 9,071.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.