Home / 2,540.08-3,810.38-691.34

Finding the Fourth Proportional to 2,540.08, 3,810.38 and 691.34

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Solution

The fourth proportional to 2,540.08, 3,810.38 and 691.34 is: 1,037.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.08 : 3,810.38 = 691.34 : x
  2. Step 2: Convert to fraction form
    2,540.08/3,810.38 = 691.34/x
  3. Step 3: Cross multiply
    2,540.08x = 3,810.38 × 691.34
  4. Step 4: Simplify right side
    2,540.08x = 2,634,265.51
  5. Step 5: Solve for x
    x = 2,634,265.51/2,540.08
  6. Step 6: Final answer
    x = 1,037.08

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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.