Home / 3,480.68-5,219.90-1,140.05

Finding the Fourth Proportional to 3,480.68, 5,219.90 and 1,140.05

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Solution

The fourth proportional to 3,480.68, 5,219.90 and 1,140.05 is: 1,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.68 : 5,219.90 = 1,140.05 : x
  2. Step 2: Convert to fraction form
    3,480.68/5,219.90 = 1,140.05/x
  3. Step 3: Cross multiply
    3,480.68x = 5,219.90 × 1,140.05
  4. Step 4: Simplify right side
    3,480.68x = 5,950,920.90
  5. Step 5: Solve for x
    x = 5,950,920.90/3,480.68
  6. Step 6: Final answer
    x = 1,709.70

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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.