Home / 1,126.13-1,689.14-346.10

Finding the Fourth Proportional to 1,126.13, 1,689.14 and 346.10

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Solution

The fourth proportional to 1,126.13, 1,689.14 and 346.10 is: 519.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.13 : 1,689.14 = 346.10 : x
  2. Step 2: Convert to fraction form
    1,126.13/1,689.14 = 346.10/x
  3. Step 3: Cross multiply
    1,126.13x = 1,689.14 × 346.10
  4. Step 4: Simplify right side
    1,126.13x = 584,601.18
  5. Step 5: Solve for x
    x = 584,601.18/1,126.13
  6. Step 6: Final answer
    x = 519.13

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Double scale
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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.