Home / 5,679.38-7,841.37-3,555.74

Finding the Fourth Proportional to 5,679.38, 7,841.37 and 3,555.74

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Solution

The fourth proportional to 5,679.38, 7,841.37 and 3,555.74 is: 4,909.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.38 : 7,841.37 = 3,555.74 : x
  2. Step 2: Convert to fraction form
    5,679.38/7,841.37 = 3,555.74/x
  3. Step 3: Cross multiply
    5,679.38x = 7,841.37 × 3,555.74
  4. Step 4: Simplify right side
    5,679.38x = 27,881,872.96
  5. Step 5: Solve for x
    x = 27,881,872.96/5,679.38
  6. Step 6: Final answer
    x = 4,909.32

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Half scale
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Double 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.