Home / 1,344.62-1,851.28-1,147.34

Finding the Fourth Proportional to 1,344.62, 1,851.28 and 1,147.34

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Solution

The fourth proportional to 1,344.62, 1,851.28 and 1,147.34 is: 1,579.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.62 : 1,851.28 = 1,147.34 : x
  2. Step 2: Convert to fraction form
    1,344.62/1,851.28 = 1,147.34/x
  3. Step 3: Cross multiply
    1,344.62x = 1,851.28 × 1,147.34
  4. Step 4: Simplify right side
    1,344.62x = 2,124,035.47
  5. Step 5: Solve for x
    x = 2,124,035.47/1,344.62
  6. Step 6: Final answer
    x = 1,579.66

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.