Home / 3,685.20-5,085.63-2,006.61

Finding the Fourth Proportional to 3,685.20, 5,085.63 and 2,006.61

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Solution

The fourth proportional to 3,685.20, 5,085.63 and 2,006.61 is: 2,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.20 : 5,085.63 = 2,006.61 : x
  2. Step 2: Convert to fraction form
    3,685.20/5,085.63 = 2,006.61/x
  3. Step 3: Cross multiply
    3,685.20x = 5,085.63 × 2,006.61
  4. Step 4: Simplify right side
    3,685.20x = 10,204,876.01
  5. Step 5: Solve for x
    x = 10,204,876.01/3,685.20
  6. Step 6: Final answer
    x = 2,769.15

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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.