Home / 2,621.24-3,617.36-1,442.40

Finding the Fourth Proportional to 2,621.24, 3,617.36 and 1,442.40

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Solution

The fourth proportional to 2,621.24, 3,617.36 and 1,442.40 is: 1,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.24 : 3,617.36 = 1,442.40 : x
  2. Step 2: Convert to fraction form
    2,621.24/3,617.36 = 1,442.40/x
  3. Step 3: Cross multiply
    2,621.24x = 3,617.36 × 1,442.40
  4. Step 4: Simplify right side
    2,621.24x = 5,217,680.06
  5. Step 5: Solve for x
    x = 5,217,680.06/2,621.24
  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.