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Finding the Fourth Proportional to 8,687.43, 13,031.73 and 4,303.71

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Solution

The fourth proportional to 8,687.43, 13,031.73 and 4,303.71 is: 6,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.43 : 13,031.73 = 4,303.71 : x
  2. Step 2: Convert to fraction form
    8,687.43/13,031.73 = 4,303.71/x
  3. Step 3: Cross multiply
    8,687.43x = 13,031.73 × 4,303.71
  4. Step 4: Simplify right side
    8,687.43x = 56,084,700.04
  5. Step 5: Solve for x
    x = 56,084,700.04/8,687.43
  6. Step 6: Final answer
    x = 6,455.85

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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.