Home / 5,278.61-7,921.80-2,505.29

Finding the Fourth Proportional to 5,278.61, 7,921.80 and 2,505.29

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Solution

The fourth proportional to 5,278.61, 7,921.80 and 2,505.29 is: 3,759.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.61 : 7,921.80 = 2,505.29 : x
  2. Step 2: Convert to fraction form
    5,278.61/7,921.80 = 2,505.29/x
  3. Step 3: Cross multiply
    5,278.61x = 7,921.80 × 2,505.29
  4. Step 4: Simplify right side
    5,278.61x = 19,846,366.71
  5. Step 5: Solve for x
    x = 19,846,366.71/5,278.61
  6. Step 6: Final answer
    x = 3,759.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.