Home / 5,345.79-7,377.21-2,987.97

Finding the Fourth Proportional to 5,345.79, 7,377.21 and 2,987.97

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Solution

The fourth proportional to 5,345.79, 7,377.21 and 2,987.97 is: 4,123.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,345.79 : 7,377.21 = 2,987.97 : x
  2. Step 2: Convert to fraction form
    5,345.79/7,377.21 = 2,987.97/x
  3. Step 3: Cross multiply
    5,345.79x = 7,377.21 × 2,987.97
  4. Step 4: Simplify right side
    5,345.79x = 22,042,882.16
  5. Step 5: Solve for x
    x = 22,042,882.16/5,345.79
  6. Step 6: Final answer
    x = 4,123.41

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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.