Home / 7,711.20-10,641.42-4,174.38

Finding the Fourth Proportional to 7,711.20, 10,641.42 and 4,174.38

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Solution

The fourth proportional to 7,711.20, 10,641.42 and 4,174.38 is: 5,760.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.20 : 10,641.42 = 4,174.38 : x
  2. Step 2: Convert to fraction form
    7,711.20/10,641.42 = 4,174.38/x
  3. Step 3: Cross multiply
    7,711.20x = 10,641.42 × 4,174.38
  4. Step 4: Simplify right side
    7,711.20x = 44,421,330.82
  5. Step 5: Solve for x
    x = 44,421,330.82/7,711.20
  6. Step 6: Final answer
    x = 5,760.62

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Half scale
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Double scale
Find fourth proportional to 7,712.20, 10,642.80 and 4,175.38
Similar ratio
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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.