Home / 7,711.20-10,640.70-4,566.78

Finding the Fourth Proportional to 7,711.20, 10,640.70 and 4,566.78

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Solution

The fourth proportional to 7,711.20, 10,640.70 and 4,566.78 is: 6,301.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.20 : 10,640.70 = 4,566.78 : x
  2. Step 2: Convert to fraction form
    7,711.20/10,640.70 = 4,566.78/x
  3. Step 3: Cross multiply
    7,711.20x = 10,640.70 × 4,566.78
  4. Step 4: Simplify right side
    7,711.20x = 48,593,735.95
  5. Step 5: Solve for x
    x = 48,593,735.95/7,711.20
  6. Step 6: Final answer
    x = 6,301.71

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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.