Home / 3,759.91-5,638.08-1,126.40

Finding the Fourth Proportional to 3,759.91, 5,638.08 and 1,126.40

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Solution

The fourth proportional to 3,759.91, 5,638.08 and 1,126.40 is: 1,689.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.91 : 5,638.08 = 1,126.40 : x
  2. Step 2: Convert to fraction form
    3,759.91/5,638.08 = 1,126.40/x
  3. Step 3: Cross multiply
    3,759.91x = 5,638.08 × 1,126.40
  4. Step 4: Simplify right side
    3,759.91x = 6,350,733.31
  5. Step 5: Solve for x
    x = 6,350,733.31/3,759.91
  6. Step 6: Final answer
    x = 1,689.07

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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.