Home / 2,960.77-4,085.76-1,781.62

Finding the Fourth Proportional to 2,960.77, 4,085.76 and 1,781.62

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Solution

The fourth proportional to 2,960.77, 4,085.76 and 1,781.62 is: 2,458.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,960.77 : 4,085.76 = 1,781.62 : x
  2. Step 2: Convert to fraction form
    2,960.77/4,085.76 = 1,781.62/x
  3. Step 3: Cross multiply
    2,960.77x = 4,085.76 × 1,781.62
  4. Step 4: Simplify right side
    2,960.77x = 7,279,251.30
  5. Step 5: Solve for x
    x = 7,279,251.30/2,960.77
  6. Step 6: Final answer
    x = 2,458.57

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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.