Home / 1,639.28-2,261.56-1,631.96

Finding the Fourth Proportional to 1,639.28, 2,261.56 and 1,631.96

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Solution

The fourth proportional to 1,639.28, 2,261.56 and 1,631.96 is: 2,251.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.28 : 2,261.56 = 1,631.96 : x
  2. Step 2: Convert to fraction form
    1,639.28/2,261.56 = 1,631.96/x
  3. Step 3: Cross multiply
    1,639.28x = 2,261.56 × 1,631.96
  4. Step 4: Simplify right side
    1,639.28x = 3,690,775.46
  5. Step 5: Solve for x
    x = 3,690,775.46/1,639.28
  6. Step 6: Final answer
    x = 2,251.46

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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.