Home / 4,478.78-6,181.10-2,489.28

Finding the Fourth Proportional to 4,478.78, 6,181.10 and 2,489.28

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Solution

The fourth proportional to 4,478.78, 6,181.10 and 2,489.28 is: 3,435.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.78 : 6,181.10 = 2,489.28 : x
  2. Step 2: Convert to fraction form
    4,478.78/6,181.10 = 2,489.28/x
  3. Step 3: Cross multiply
    4,478.78x = 6,181.10 × 2,489.28
  4. Step 4: Simplify right side
    4,478.78x = 15,386,488.61
  5. Step 5: Solve for x
    x = 15,386,488.61/4,478.78
  6. Step 6: Final answer
    x = 3,435.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.