Home / 1,340.22-2,010.33-724.21

Finding the Fourth Proportional to 1,340.22, 2,010.33 and 724.21

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Solution

The fourth proportional to 1,340.22, 2,010.33 and 724.21 is: 1,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.22 : 2,010.33 = 724.21 : x
  2. Step 2: Convert to fraction form
    1,340.22/2,010.33 = 724.21/x
  3. Step 3: Cross multiply
    1,340.22x = 2,010.33 × 724.21
  4. Step 4: Simplify right side
    1,340.22x = 1,455,904.30
  5. Step 5: Solve for x
    x = 1,455,904.30/1,340.22
  6. Step 6: Final answer
    x = 1,086.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.