Home / 2,960.28-4,085.64-1,781.56

Finding the Fourth Proportional to 2,960.28, 4,085.64 and 1,781.56

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Solution

The fourth proportional to 2,960.28, 4,085.64 and 1,781.56 is: 2,458.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,960.28 : 4,085.64 = 1,781.56 : x
  2. Step 2: Convert to fraction form
    2,960.28/4,085.64 = 1,781.56/x
  3. Step 3: Cross multiply
    2,960.28x = 4,085.64 × 1,781.56
  4. Step 4: Simplify right side
    2,960.28x = 7,278,812.80
  5. Step 5: Solve for x
    x = 7,278,812.80/2,960.28
  6. Step 6: Final answer
    x = 2,458.83

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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.