Home / 4,981.40-6,874.28-3,488.78

Finding the Fourth Proportional to 4,981.40, 6,874.28 and 3,488.78

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Solution

The fourth proportional to 4,981.40, 6,874.28 and 3,488.78 is: 4,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.40 : 6,874.28 = 3,488.78 : x
  2. Step 2: Convert to fraction form
    4,981.40/6,874.28 = 3,488.78/x
  3. Step 3: Cross multiply
    4,981.40x = 6,874.28 × 3,488.78
  4. Step 4: Simplify right side
    4,981.40x = 23,982,850.58
  5. Step 5: Solve for x
    x = 23,982,850.58/4,981.40
  6. Step 6: Final answer
    x = 4,814.48

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1.5x scale

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.