Home / 2,687.30-4,031.67-1,126.46

Finding the Fourth Proportional to 2,687.30, 4,031.67 and 1,126.46

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Solution

The fourth proportional to 2,687.30, 4,031.67 and 1,126.46 is: 1,689.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.30 : 4,031.67 = 1,126.46 : x
  2. Step 2: Convert to fraction form
    2,687.30/4,031.67 = 1,126.46/x
  3. Step 3: Cross multiply
    2,687.30x = 4,031.67 × 1,126.46
  4. Step 4: Simplify right side
    2,687.30x = 4,541,514.99
  5. Step 5: Solve for x
    x = 4,541,514.99/2,687.30
  6. Step 6: Final answer
    x = 1,689.99

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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.