Home / 8,311.50-12,468.49-2,687.29

Finding the Fourth Proportional to 8,311.50, 12,468.49 and 2,687.29

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Solution

The fourth proportional to 8,311.50, 12,468.49 and 2,687.29 is: 4,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.50 : 12,468.49 = 2,687.29 : x
  2. Step 2: Convert to fraction form
    8,311.50/12,468.49 = 2,687.29/x
  3. Step 3: Cross multiply
    8,311.50x = 12,468.49 × 2,687.29
  4. Step 4: Simplify right side
    8,311.50x = 33,506,386.15
  5. Step 5: Solve for x
    x = 33,506,386.15/8,311.50
  6. Step 6: Final answer
    x = 4,031.33

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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.