Home / 2,478.31-3,717.16-1,438.88

Finding the Fourth Proportional to 2,478.31, 3,717.16 and 1,438.88

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Solution

The fourth proportional to 2,478.31, 3,717.16 and 1,438.88 is: 2,158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.31 : 3,717.16 = 1,438.88 : x
  2. Step 2: Convert to fraction form
    2,478.31/3,717.16 = 1,438.88/x
  3. Step 3: Cross multiply
    2,478.31x = 3,717.16 × 1,438.88
  4. Step 4: Simplify right side
    2,478.31x = 5,348,525.00
  5. Step 5: Solve for x
    x = 5,348,525.00/2,478.31
  6. Step 6: Final answer
    x = 2,158.14

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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.