Home / 3,116.80-4,301.32-1,790.92

Finding the Fourth Proportional to 3,116.80, 4,301.32 and 1,790.92

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Solution

The fourth proportional to 3,116.80, 4,301.32 and 1,790.92 is: 2,471.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.80 : 4,301.32 = 1,790.92 : x
  2. Step 2: Convert to fraction form
    3,116.80/4,301.32 = 1,790.92/x
  3. Step 3: Cross multiply
    3,116.80x = 4,301.32 × 1,790.92
  4. Step 4: Simplify right side
    3,116.80x = 7,703,320.01
  5. Step 5: Solve for x
    x = 7,703,320.01/3,116.80
  6. Step 6: Final answer
    x = 2,471.55

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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.