Home / 2,540.16-3,505.38-1,421.08

Finding the Fourth Proportional to 2,540.16, 3,505.38 and 1,421.08

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Solution

The fourth proportional to 2,540.16, 3,505.38 and 1,421.08 is: 1,961.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.16 : 3,505.38 = 1,421.08 : x
  2. Step 2: Convert to fraction form
    2,540.16/3,505.38 = 1,421.08/x
  3. Step 3: Cross multiply
    2,540.16x = 3,505.38 × 1,421.08
  4. Step 4: Simplify right side
    2,540.16x = 4,981,425.41
  5. Step 5: Solve for x
    x = 4,981,425.41/2,540.16
  6. Step 6: Final answer
    x = 1,961.07

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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.