Home / 2,685.38-3,707.08-1,790.61

Finding the Fourth Proportional to 2,685.38, 3,707.08 and 1,790.61

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Solution

The fourth proportional to 2,685.38, 3,707.08 and 1,790.61 is: 2,471.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.38 : 3,707.08 = 1,790.61 : x
  2. Step 2: Convert to fraction form
    2,685.38/3,707.08 = 1,790.61/x
  3. Step 3: Cross multiply
    2,685.38x = 3,707.08 × 1,790.61
  4. Step 4: Simplify right side
    2,685.38x = 6,637,950.66
  5. Step 5: Solve for x
    x = 6,637,950.66/2,685.38
  6. Step 6: Final answer
    x = 2,471.88

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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.