Home / 3,117.27-4,301.77-1,790.90

Finding the Fourth Proportional to 3,117.27, 4,301.77 and 1,790.90

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Solution

The fourth proportional to 3,117.27, 4,301.77 and 1,790.90 is: 2,471.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.27 : 4,301.77 = 1,790.90 : x
  2. Step 2: Convert to fraction form
    3,117.27/4,301.77 = 1,790.90/x
  3. Step 3: Cross multiply
    3,117.27x = 4,301.77 × 1,790.90
  4. Step 4: Simplify right side
    3,117.27x = 7,704,039.89
  5. Step 5: Solve for x
    x = 7,704,039.89/3,117.27
  6. Step 6: Final answer
    x = 2,471.41

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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.