Home / 5,141.76-7,712.31-1,631.70

Finding the Fourth Proportional to 5,141.76, 7,712.31 and 1,631.70

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Solution

The fourth proportional to 5,141.76, 7,712.31 and 1,631.70 is: 2,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,141.76 : 7,712.31 = 1,631.70 : x
  2. Step 2: Convert to fraction form
    5,141.76/7,712.31 = 1,631.70/x
  3. Step 3: Cross multiply
    5,141.76x = 7,712.31 × 1,631.70
  4. Step 4: Simplify right side
    5,141.76x = 12,584,176.23
  5. Step 5: Solve for x
    x = 12,584,176.23/5,141.76
  6. Step 6: Final answer
    x = 2,447.45

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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.