Home / 7,081.08-9,770.40-3,937.20

Finding the Fourth Proportional to 7,081.08, 9,770.40 and 3,937.20

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Solution

The fourth proportional to 7,081.08, 9,770.40 and 3,937.20 is: 5,432.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.08 : 9,770.40 = 3,937.20 : x
  2. Step 2: Convert to fraction form
    7,081.08/9,770.40 = 3,937.20/x
  3. Step 3: Cross multiply
    7,081.08x = 9,770.40 × 3,937.20
  4. Step 4: Simplify right side
    7,081.08x = 38,468,018.88
  5. Step 5: Solve for x
    x = 38,468,018.88/7,081.08
  6. Step 6: Final answer
    x = 5,432.51

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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.