Home / 1,126.10-1,689.11-293.17

Finding the Fourth Proportional to 1,126.10, 1,689.11 and 293.17

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Solution

The fourth proportional to 1,126.10, 1,689.11 and 293.17 is: 439.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.10 : 1,689.11 = 293.17 : x
  2. Step 2: Convert to fraction form
    1,126.10/1,689.11 = 293.17/x
  3. Step 3: Cross multiply
    1,126.10x = 1,689.11 × 293.17
  4. Step 4: Simplify right side
    1,126.10x = 495,195.78
  5. Step 5: Solve for x
    x = 495,195.78/1,126.10
  6. Step 6: Final answer
    x = 439.74

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Double scale
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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.