Home / 7,661.42-11,497.85-5,691.60

Finding the Fourth Proportional to 7,661.42, 11,497.85 and 5,691.60

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Solution

The fourth proportional to 7,661.42, 11,497.85 and 5,691.60 is: 8,541.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.42 : 11,497.85 = 5,691.60 : x
  2. Step 2: Convert to fraction form
    7,661.42/11,497.85 = 5,691.60/x
  3. Step 3: Cross multiply
    7,661.42x = 11,497.85 × 5,691.60
  4. Step 4: Simplify right side
    7,661.42x = 65,441,155.95
  5. Step 5: Solve for x
    x = 65,441,155.95/7,661.42
  6. Step 6: Final answer
    x = 8,541.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.