Home / 2,451.55-3,382.14-1,555.21

Finding the Fourth Proportional to 2,451.55, 3,382.14 and 1,555.21

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Solution

The fourth proportional to 2,451.55, 3,382.14 and 1,555.21 is: 2,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.55 : 3,382.14 = 1,555.21 : x
  2. Step 2: Convert to fraction form
    2,451.55/3,382.14 = 1,555.21/x
  3. Step 3: Cross multiply
    2,451.55x = 3,382.14 × 1,555.21
  4. Step 4: Simplify right side
    2,451.55x = 5,259,937.95
  5. Step 5: Solve for x
    x = 5,259,937.95/2,451.55
  6. Step 6: Final answer
    x = 2,145.56

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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.