Home / 1,871.57-2,581.92-1,085.19

Finding the Fourth Proportional to 1,871.57, 2,581.92 and 1,085.19

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Solution

The fourth proportional to 1,871.57, 2,581.92 and 1,085.19 is: 1,497.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.57 : 2,581.92 = 1,085.19 : x
  2. Step 2: Convert to fraction form
    1,871.57/2,581.92 = 1,085.19/x
  3. Step 3: Cross multiply
    1,871.57x = 2,581.92 × 1,085.19
  4. Step 4: Simplify right side
    1,871.57x = 2,801,873.76
  5. Step 5: Solve for x
    x = 2,801,873.76/1,871.57
  6. Step 6: Final answer
    x = 1,497.08

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Double scale
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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.