Home / 2,540.40-3,807.52-1,154.40

Finding the Fourth Proportional to 2,540.40, 3,807.52 and 1,154.40

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Solution

The fourth proportional to 2,540.40, 3,807.52 and 1,154.40 is: 1,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.40 : 3,807.52 = 1,154.40 : x
  2. Step 2: Convert to fraction form
    2,540.40/3,807.52 = 1,154.40/x
  3. Step 3: Cross multiply
    2,540.40x = 3,807.52 × 1,154.40
  4. Step 4: Simplify right side
    2,540.40x = 4,395,401.09
  5. Step 5: Solve for x
    x = 4,395,401.09/2,540.40
  6. Step 6: Final answer
    x = 1,730.20

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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.