Home / 2,621.20-3,617.35-1,442.38

Finding the Fourth Proportional to 2,621.20, 3,617.35 and 1,442.38

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Solution

The fourth proportional to 2,621.20, 3,617.35 and 1,442.38 is: 1,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.20 : 3,617.35 = 1,442.38 : x
  2. Step 2: Convert to fraction form
    2,621.20/3,617.35 = 1,442.38/x
  3. Step 3: Cross multiply
    2,621.20x = 3,617.35 × 1,442.38
  4. Step 4: Simplify right side
    2,621.20x = 5,217,593.29
  5. Step 5: Solve for x
    x = 5,217,593.29/2,621.20
  6. Step 6: Final answer
    x = 1,990.54

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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.