Home / 5,278.28-7,283.52-2,919.80

Finding the Fourth Proportional to 5,278.28, 7,283.52 and 2,919.80

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Solution

The fourth proportional to 5,278.28, 7,283.52 and 2,919.80 is: 4,029.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.28 : 7,283.52 = 2,919.80 : x
  2. Step 2: Convert to fraction form
    5,278.28/7,283.52 = 2,919.80/x
  3. Step 3: Cross multiply
    5,278.28x = 7,283.52 × 2,919.80
  4. Step 4: Simplify right side
    5,278.28x = 21,266,421.70
  5. Step 5: Solve for x
    x = 21,266,421.70/5,278.28
  6. Step 6: Final answer
    x = 4,029.04

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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.