Home / 2,990.40-4,124.43-2,654.66

Finding the Fourth Proportional to 2,990.40, 4,124.43 and 2,654.66

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Solution

The fourth proportional to 2,990.40, 4,124.43 and 2,654.66 is: 3,661.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.40 : 4,124.43 = 2,654.66 : x
  2. Step 2: Convert to fraction form
    2,990.40/4,124.43 = 2,654.66/x
  3. Step 3: Cross multiply
    2,990.40x = 4,124.43 × 2,654.66
  4. Step 4: Simplify right side
    2,990.40x = 10,948,938.72
  5. Step 5: Solve for x
    x = 10,948,938.72/2,990.40
  6. Step 6: Final answer
    x = 3,661.36

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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.