Home / 5,348.31-7,380.77-2,990.40

Finding the Fourth Proportional to 5,348.31, 7,380.77 and 2,990.40

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Solution

The fourth proportional to 5,348.31, 7,380.77 and 2,990.40 is: 4,126.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,348.31 : 7,380.77 = 2,990.40 : x
  2. Step 2: Convert to fraction form
    5,348.31/7,380.77 = 2,990.40/x
  3. Step 3: Cross multiply
    5,348.31x = 7,380.77 × 2,990.40
  4. Step 4: Simplify right side
    5,348.31x = 22,071,439.66
  5. Step 5: Solve for x
    x = 22,071,439.66/5,348.31
  6. Step 6: Final answer
    x = 4,126.81

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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.