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Finding the Fourth Proportional to 8,686.56, 13,031.88 and 2,843.16

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Solution

The fourth proportional to 8,686.56, 13,031.88 and 2,843.16 is: 4,265.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.56 : 13,031.88 = 2,843.16 : x
  2. Step 2: Convert to fraction form
    8,686.56/13,031.88 = 2,843.16/x
  3. Step 3: Cross multiply
    8,686.56x = 13,031.88 × 2,843.16
  4. Step 4: Simplify right side
    8,686.56x = 37,051,719.94
  5. Step 5: Solve for x
    x = 37,051,719.94/8,686.56
  6. Step 6: Final answer
    x = 4,265.41

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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.