Home / 2,638.74-3,956.28-1,339.32

Finding the Fourth Proportional to 2,638.74, 3,956.28 and 1,339.32

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Solution

The fourth proportional to 2,638.74, 3,956.28 and 1,339.32 is: 2,008.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.74 : 3,956.28 = 1,339.32 : x
  2. Step 2: Convert to fraction form
    2,638.74/3,956.28 = 1,339.32/x
  3. Step 3: Cross multiply
    2,638.74x = 3,956.28 × 1,339.32
  4. Step 4: Simplify right side
    2,638.74x = 5,298,724.93
  5. Step 5: Solve for x
    x = 5,298,724.93/2,638.74
  6. Step 6: Final answer
    x = 2,008.05

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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.