Home / 1,891.60-2,610.46-1,145.42

Finding the Fourth Proportional to 1,891.60, 2,610.46 and 1,145.42

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Solution

The fourth proportional to 1,891.60, 2,610.46 and 1,145.42 is: 1,580.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.60 : 2,610.46 = 1,145.42 : x
  2. Step 2: Convert to fraction form
    1,891.60/2,610.46 = 1,145.42/x
  3. Step 3: Cross multiply
    1,891.60x = 2,610.46 × 1,145.42
  4. Step 4: Simplify right side
    1,891.60x = 2,990,073.09
  5. Step 5: Solve for x
    x = 2,990,073.09/1,891.60
  6. Step 6: Final answer
    x = 1,580.71

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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.