Home / 5,158.32-7,122.18-3,171.54

Finding the Fourth Proportional to 5,158.32, 7,122.18 and 3,171.54

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Solution

The fourth proportional to 5,158.32, 7,122.18 and 3,171.54 is: 4,379.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.32 : 7,122.18 = 3,171.54 : x
  2. Step 2: Convert to fraction form
    5,158.32/7,122.18 = 3,171.54/x
  3. Step 3: Cross multiply
    5,158.32x = 7,122.18 × 3,171.54
  4. Step 4: Simplify right side
    5,158.32x = 22,588,278.76
  5. Step 5: Solve for x
    x = 22,588,278.76/5,158.32
  6. Step 6: Final answer
    x = 4,379.00

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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.