Home / 2,525.40-3,790.80-1,431.90

Finding the Fourth Proportional to 2,525.40, 3,790.80 and 1,431.90

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Solution

The fourth proportional to 2,525.40, 3,790.80 and 1,431.90 is: 2,149.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,525.40 : 3,790.80 = 1,431.90 : x
  2. Step 2: Convert to fraction form
    2,525.40/3,790.80 = 1,431.90/x
  3. Step 3: Cross multiply
    2,525.40x = 3,790.80 × 1,431.90
  4. Step 4: Simplify right side
    2,525.40x = 5,428,046.52
  5. Step 5: Solve for x
    x = 5,428,046.52/2,525.40
  6. Step 6: Final answer
    x = 2,149.38

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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.