Home / 4,045.72-5,577.38-3,990.24

Finding the Fourth Proportional to 4,045.72, 5,577.38 and 3,990.24

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Solution

The fourth proportional to 4,045.72, 5,577.38 and 3,990.24 is: 5,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,045.72 : 5,577.38 = 3,990.24 : x
  2. Step 2: Convert to fraction form
    4,045.72/5,577.38 = 3,990.24/x
  3. Step 3: Cross multiply
    4,045.72x = 5,577.38 × 3,990.24
  4. Step 4: Simplify right side
    4,045.72x = 22,255,084.77
  5. Step 5: Solve for x
    x = 22,255,084.77/4,045.72
  6. Step 6: Final answer
    x = 5,500.90

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Half scale
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Double scale
Find fourth proportional to 4,046.72, 5,578.76 and 3,991.24
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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.