Home / 2,459.78-3,689.94-1,228.04

Finding the Fourth Proportional to 2,459.78, 3,689.94 and 1,228.04

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Solution

The fourth proportional to 2,459.78, 3,689.94 and 1,228.04 is: 1,842.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,459.78 : 3,689.94 = 1,228.04 : x
  2. Step 2: Convert to fraction form
    2,459.78/3,689.94 = 1,228.04/x
  3. Step 3: Cross multiply
    2,459.78x = 3,689.94 × 1,228.04
  4. Step 4: Simplify right side
    2,459.78x = 4,531,393.92
  5. Step 5: Solve for x
    x = 4,531,393.92/2,459.78
  6. Step 6: Final answer
    x = 1,842.19

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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.