Home / 9,363.74-12,921.51-5,171.90

Finding the Fourth Proportional to 9,363.74, 12,921.51 and 5,171.90

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Solution

The fourth proportional to 9,363.74, 12,921.51 and 5,171.90 is: 7,136.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,363.74 : 12,921.51 = 5,171.90 : x
  2. Step 2: Convert to fraction form
    9,363.74/12,921.51 = 5,171.90/x
  3. Step 3: Cross multiply
    9,363.74x = 12,921.51 × 5,171.90
  4. Step 4: Simplify right side
    9,363.74x = 66,828,757.57
  5. Step 5: Solve for x
    x = 66,828,757.57/9,363.74
  6. Step 6: Final answer
    x = 7,136.97

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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.