Home / 5,280.29-7,919.33-3,400.55

Finding the Fourth Proportional to 5,280.29, 7,919.33 and 3,400.55

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Solution

The fourth proportional to 5,280.29, 7,919.33 and 3,400.55 is: 5,100.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.29 : 7,919.33 = 3,400.55 : x
  2. Step 2: Convert to fraction form
    5,280.29/7,919.33 = 3,400.55/x
  3. Step 3: Cross multiply
    5,280.29x = 7,919.33 × 3,400.55
  4. Step 4: Simplify right side
    5,280.29x = 26,930,080.43
  5. Step 5: Solve for x
    x = 26,930,080.43/5,280.29
  6. Step 6: Final answer
    x = 5,100.11

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1.5x scale

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.