Home / 7,561.05-10,439.33-6,761.89

Finding the Fourth Proportional to 7,561.05, 10,439.33 and 6,761.89

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Solution

The fourth proportional to 7,561.05, 10,439.33 and 6,761.89 is: 9,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,561.05 : 10,439.33 = 6,761.89 : x
  2. Step 2: Convert to fraction form
    7,561.05/10,439.33 = 6,761.89/x
  3. Step 3: Cross multiply
    7,561.05x = 10,439.33 × 6,761.89
  4. Step 4: Simplify right side
    7,561.05x = 70,589,601.13
  5. Step 5: Solve for x
    x = 70,589,601.13/7,561.05
  6. Step 6: Final answer
    x = 9,335.95

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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.