Home / 2,687.10-4,031.28-1,043.64

Finding the Fourth Proportional to 2,687.10, 4,031.28 and 1,043.64

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Solution

The fourth proportional to 2,687.10, 4,031.28 and 1,043.64 is: 1,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.10 : 4,031.28 = 1,043.64 : x
  2. Step 2: Convert to fraction form
    2,687.10/4,031.28 = 1,043.64/x
  3. Step 3: Cross multiply
    2,687.10x = 4,031.28 × 1,043.64
  4. Step 4: Simplify right side
    2,687.10x = 4,207,205.06
  5. Step 5: Solve for x
    x = 4,207,205.06/2,687.10
  6. Step 6: Final answer
    x = 1,565.70

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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.