Home / 2,686.62-4,031.91-1,761.87

Finding the Fourth Proportional to 2,686.62, 4,031.91 and 1,761.87

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Solution

The fourth proportional to 2,686.62, 4,031.91 and 1,761.87 is: 2,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.62 : 4,031.91 = 1,761.87 : x
  2. Step 2: Convert to fraction form
    2,686.62/4,031.91 = 1,761.87/x
  3. Step 3: Cross multiply
    2,686.62x = 4,031.91 × 1,761.87
  4. Step 4: Simplify right side
    2,686.62x = 7,103,701.27
  5. Step 5: Solve for x
    x = 7,103,701.27/2,686.62
  6. Step 6: Final answer
    x = 2,644.10

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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.