Home / 3,116.80-4,301.28-1,790.56

Finding the Fourth Proportional to 3,116.80, 4,301.28 and 1,790.56

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Solution

The fourth proportional to 3,116.80, 4,301.28 and 1,790.56 is: 2,471.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.80 : 4,301.28 = 1,790.56 : x
  2. Step 2: Convert to fraction form
    3,116.80/4,301.28 = 1,790.56/x
  3. Step 3: Cross multiply
    3,116.80x = 4,301.28 × 1,790.56
  4. Step 4: Simplify right side
    3,116.80x = 7,701,699.92
  5. Step 5: Solve for x
    x = 7,701,699.92/3,116.80
  6. Step 6: Final answer
    x = 2,471.03

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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.