Home / 3,520.29-5,278.74-1,439.47

Finding the Fourth Proportional to 3,520.29, 5,278.74 and 1,439.47

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Solution

The fourth proportional to 3,520.29, 5,278.74 and 1,439.47 is: 2,158.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.29 : 5,278.74 = 1,439.47 : x
  2. Step 2: Convert to fraction form
    3,520.29/5,278.74 = 1,439.47/x
  3. Step 3: Cross multiply
    3,520.29x = 5,278.74 × 1,439.47
  4. Step 4: Simplify right side
    3,520.29x = 7,598,589.07
  5. Step 5: Solve for x
    x = 7,598,589.07/3,520.29
  6. Step 6: Final answer
    x = 2,158.51

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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.