Home / 1,581.19-2,182.07-882.56

Finding the Fourth Proportional to 1,581.19, 2,182.07 and 882.56

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Solution

The fourth proportional to 1,581.19, 2,182.07 and 882.56 is: 1,217.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.19 : 2,182.07 = 882.56 : x
  2. Step 2: Convert to fraction form
    1,581.19/2,182.07 = 882.56/x
  3. Step 3: Cross multiply
    1,581.19x = 2,182.07 × 882.56
  4. Step 4: Simplify right side
    1,581.19x = 1,925,815.36
  5. Step 5: Solve for x
    x = 1,925,815.36/1,581.19
  6. Step 6: Final answer
    x = 1,217.96

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Half 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.