Home / 3,117.30-4,301.87-1,790.91

Finding the Fourth Proportional to 3,117.30, 4,301.87 and 1,790.91

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Solution

The fourth proportional to 3,117.30, 4,301.87 and 1,790.91 is: 2,471.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.30 : 4,301.87 = 1,790.91 : x
  2. Step 2: Convert to fraction form
    3,117.30/4,301.87 = 1,790.91/x
  3. Step 3: Cross multiply
    3,117.30x = 4,301.87 × 1,790.91
  4. Step 4: Simplify right side
    3,117.30x = 7,704,262.00
  5. Step 5: Solve for x
    x = 7,704,262.00/3,117.30
  6. Step 6: Final answer
    x = 2,471.45

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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.