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Finding the Fourth Proportional to 8,687.01, 13,031.28 and 2,447.07

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Solution

The fourth proportional to 8,687.01, 13,031.28 and 2,447.07 is: 3,670.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.01 : 13,031.28 = 2,447.07 : x
  2. Step 2: Convert to fraction form
    8,687.01/13,031.28 = 2,447.07/x
  3. Step 3: Cross multiply
    8,687.01x = 13,031.28 × 2,447.07
  4. Step 4: Simplify right side
    8,687.01x = 31,888,503.22
  5. Step 5: Solve for x
    x = 31,888,503.22/8,687.01
  6. Step 6: Final answer
    x = 3,670.83

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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.