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Finding the Fourth Proportional to 1,581.32, 2,182.19 and 873.23

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Solution

The fourth proportional to 1,581.32, 2,182.19 and 873.23 is: 1,205.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.32 : 2,182.19 = 873.23 : x
  2. Step 2: Convert to fraction form
    1,581.32/2,182.19 = 873.23/x
  3. Step 3: Cross multiply
    1,581.32x = 2,182.19 × 873.23
  4. Step 4: Simplify right side
    1,581.32x = 1,905,553.77
  5. Step 5: Solve for x
    x = 1,905,553.77/1,581.32
  6. Step 6: Final answer
    x = 1,205.04

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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.