Home / 5,656.67-7,805.61-3,138.71

Finding the Fourth Proportional to 5,656.67, 7,805.61 and 3,138.71

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Solution

The fourth proportional to 5,656.67, 7,805.61 and 3,138.71 is: 4,331.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.67 : 7,805.61 = 3,138.71 : x
  2. Step 2: Convert to fraction form
    5,656.67/7,805.61 = 3,138.71/x
  3. Step 3: Cross multiply
    5,656.67x = 7,805.61 × 3,138.71
  4. Step 4: Simplify right side
    5,656.67x = 24,499,546.16
  5. Step 5: Solve for x
    x = 24,499,546.16/5,656.67
  6. Step 6: Final answer
    x = 4,331.09

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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.