Home / 6,291.48-8,693.19-5,171.57

Finding the Fourth Proportional to 6,291.48, 8,693.19 and 5,171.57

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Solution

The fourth proportional to 6,291.48, 8,693.19 and 5,171.57 is: 7,145.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.48 : 8,693.19 = 5,171.57 : x
  2. Step 2: Convert to fraction form
    6,291.48/8,693.19 = 5,171.57/x
  3. Step 3: Cross multiply
    6,291.48x = 8,693.19 × 5,171.57
  4. Step 4: Simplify right side
    6,291.48x = 44,957,397.14
  5. Step 5: Solve for x
    x = 44,957,397.14/6,291.48
  6. Step 6: Final answer
    x = 7,145.76

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Half scale
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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.