Home / 5,348.40-7,380.12-2,990.64

Finding the Fourth Proportional to 5,348.40, 7,380.12 and 2,990.64

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Solution

The fourth proportional to 5,348.40, 7,380.12 and 2,990.64 is: 4,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,348.40 : 7,380.12 = 2,990.64 : x
  2. Step 2: Convert to fraction form
    5,348.40/7,380.12 = 2,990.64/x
  3. Step 3: Cross multiply
    5,348.40x = 7,380.12 × 2,990.64
  4. Step 4: Simplify right side
    5,348.40x = 22,071,282.08
  5. Step 5: Solve for x
    x = 22,071,282.08/5,348.40
  6. Step 6: Final answer
    x = 4,126.71

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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.