Home / 9,363.38-12,921.46-5,171.90

Finding the Fourth Proportional to 9,363.38, 12,921.46 and 5,171.90

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Solution

The fourth proportional to 9,363.38, 12,921.46 and 5,171.90 is: 7,137.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,363.38 : 12,921.46 = 5,171.90 : x
  2. Step 2: Convert to fraction form
    9,363.38/12,921.46 = 5,171.90/x
  3. Step 3: Cross multiply
    9,363.38x = 12,921.46 × 5,171.90
  4. Step 4: Simplify right side
    9,363.38x = 66,828,421.44
  5. Step 5: Solve for x
    x = 66,828,421.44/9,363.38
  6. Step 6: Final answer
    x = 7,137.22

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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.