Home / 2,487.11-3,726.41-1,388.75

Finding the Fourth Proportional to 2,487.11, 3,726.41 and 1,388.75

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Solution

The fourth proportional to 2,487.11, 3,726.41 and 1,388.75 is: 2,080.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.11 : 3,726.41 = 1,388.75 : x
  2. Step 2: Convert to fraction form
    2,487.11/3,726.41 = 1,388.75/x
  3. Step 3: Cross multiply
    2,487.11x = 3,726.41 × 1,388.75
  4. Step 4: Simplify right side
    2,487.11x = 5,175,026.31
  5. Step 5: Solve for x
    x = 5,175,026.31/2,487.11
  6. Step 6: Final answer
    x = 2,080.74

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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.