Home / 5,348.40-7,380.30-2,990.46

Finding the Fourth Proportional to 5,348.40, 7,380.30 and 2,990.46

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Solution

The fourth proportional to 5,348.40, 7,380.30 and 2,990.46 is: 4,126.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,348.40 : 7,380.30 = 2,990.46 : x
  2. Step 2: Convert to fraction form
    5,348.40/7,380.30 = 2,990.46/x
  3. Step 3: Cross multiply
    5,348.40x = 7,380.30 × 2,990.46
  4. Step 4: Simplify right side
    5,348.40x = 22,070,491.94
  5. Step 5: Solve for x
    x = 22,070,491.94/5,348.40
  6. Step 6: Final answer
    x = 4,126.56

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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.