Home / 5,380.43-7,424.83-2,990.39

Finding the Fourth Proportional to 5,380.43, 7,424.83 and 2,990.39

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Solution

The fourth proportional to 5,380.43, 7,424.83 and 2,990.39 is: 4,126.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.43 : 7,424.83 = 2,990.39 : x
  2. Step 2: Convert to fraction form
    5,380.43/7,424.83 = 2,990.39/x
  3. Step 3: Cross multiply
    5,380.43x = 7,424.83 × 2,990.39
  4. Step 4: Simplify right side
    5,380.43x = 22,203,140.99
  5. Step 5: Solve for x
    x = 22,203,140.99/5,380.43
  6. Step 6: Final answer
    x = 4,126.65

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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.