Home / 2,490.48-3,718.44-2,120.04

Finding the Fourth Proportional to 2,490.48, 3,718.44 and 2,120.04

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Solution

The fourth proportional to 2,490.48, 3,718.44 and 2,120.04 is: 3,165.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.48 : 3,718.44 = 2,120.04 : x
  2. Step 2: Convert to fraction form
    2,490.48/3,718.44 = 2,120.04/x
  3. Step 3: Cross multiply
    2,490.48x = 3,718.44 × 2,120.04
  4. Step 4: Simplify right side
    2,490.48x = 7,883,241.54
  5. Step 5: Solve for x
    x = 7,883,241.54/2,490.48
  6. Step 6: Final answer
    x = 3,165.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.