Home / 2,154.92-3,227.70-1,287.32

Finding the Fourth Proportional to 2,154.92, 3,227.70 and 1,287.32

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Solution

The fourth proportional to 2,154.92, 3,227.70 and 1,287.32 is: 1,928.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.92 : 3,227.70 = 1,287.32 : x
  2. Step 2: Convert to fraction form
    2,154.92/3,227.70 = 1,287.32/x
  3. Step 3: Cross multiply
    2,154.92x = 3,227.70 × 1,287.32
  4. Step 4: Simplify right side
    2,154.92x = 4,155,082.76
  5. Step 5: Solve for x
    x = 4,155,082.76/2,154.92
  6. Step 6: Final answer
    x = 1,928.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.