Home / 2,480.11-3,422.01-1,431.56

Finding the Fourth Proportional to 2,480.11, 3,422.01 and 1,431.56

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Solution

The fourth proportional to 2,480.11, 3,422.01 and 1,431.56 is: 1,975.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.11 : 3,422.01 = 1,431.56 : x
  2. Step 2: Convert to fraction form
    2,480.11/3,422.01 = 1,431.56/x
  3. Step 3: Cross multiply
    2,480.11x = 3,422.01 × 1,431.56
  4. Step 4: Simplify right side
    2,480.11x = 4,898,826.56
  5. Step 5: Solve for x
    x = 4,898,826.56/2,480.11
  6. Step 6: Final answer
    x = 1,975.25

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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.