Home / 2,639.31-3,957.88-1,177.47

Finding the Fourth Proportional to 2,639.31, 3,957.88 and 1,177.47

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Solution

The fourth proportional to 2,639.31, 3,957.88 and 1,177.47 is: 1,765.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.31 : 3,957.88 = 1,177.47 : x
  2. Step 2: Convert to fraction form
    2,639.31/3,957.88 = 1,177.47/x
  3. Step 3: Cross multiply
    2,639.31x = 3,957.88 × 1,177.47
  4. Step 4: Simplify right side
    2,639.31x = 4,660,284.96
  5. Step 5: Solve for x
    x = 4,660,284.96/2,639.31
  6. Step 6: Final answer
    x = 1,765.72

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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.