Home / 1,871.38-2,581.83-1,125.58

Finding the Fourth Proportional to 1,871.38, 2,581.83 and 1,125.58

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Solution

The fourth proportional to 1,871.38, 2,581.83 and 1,125.58 is: 1,552.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.38 : 2,581.83 = 1,125.58 : x
  2. Step 2: Convert to fraction form
    1,871.38/2,581.83 = 1,125.58/x
  3. Step 3: Cross multiply
    1,871.38x = 2,581.83 × 1,125.58
  4. Step 4: Simplify right side
    1,871.38x = 2,906,056.21
  5. Step 5: Solve for x
    x = 2,906,056.21/1,871.38
  6. Step 6: Final answer
    x = 1,552.89

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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.