Home / 2,621.40-3,617.70-1,442.46

Finding the Fourth Proportional to 2,621.40, 3,617.70 and 1,442.46

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Solution

The fourth proportional to 2,621.40, 3,617.70 and 1,442.46 is: 1,990.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.40 : 3,617.70 = 1,442.46 : x
  2. Step 2: Convert to fraction form
    2,621.40/3,617.70 = 1,442.46/x
  3. Step 3: Cross multiply
    2,621.40x = 3,617.70 × 1,442.46
  4. Step 4: Simplify right side
    2,621.40x = 5,218,387.54
  5. Step 5: Solve for x
    x = 5,218,387.54/2,621.40
  6. Step 6: Final answer
    x = 1,990.69

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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.