Home / 5,478.60-7,560.47-2,960.71

Finding the Fourth Proportional to 5,478.60, 7,560.47 and 2,960.71

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Solution

The fourth proportional to 5,478.60, 7,560.47 and 2,960.71 is: 4,085.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.60 : 7,560.47 = 2,960.71 : x
  2. Step 2: Convert to fraction form
    5,478.60/7,560.47 = 2,960.71/x
  3. Step 3: Cross multiply
    5,478.60x = 7,560.47 × 2,960.71
  4. Step 4: Simplify right side
    5,478.60x = 22,384,366.12
  5. Step 5: Solve for x
    x = 22,384,366.12/5,478.60
  6. Step 6: Final answer
    x = 4,085.78

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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.