Home / 2,621.79-3,618.03-1,442.88

Finding the Fourth Proportional to 2,621.79, 3,618.03 and 1,442.88

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Solution

The fourth proportional to 2,621.79, 3,618.03 and 1,442.88 is: 1,991.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.79 : 3,618.03 = 1,442.88 : x
  2. Step 2: Convert to fraction form
    2,621.79/3,618.03 = 1,442.88/x
  3. Step 3: Cross multiply
    2,621.79x = 3,618.03 × 1,442.88
  4. Step 4: Simplify right side
    2,621.79x = 5,220,383.13
  5. Step 5: Solve for x
    x = 5,220,383.13/2,621.79
  6. Step 6: Final answer
    x = 1,991.15

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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.