Home / 5,278.68-7,917.96-2,158.02

Finding the Fourth Proportional to 5,278.68, 7,917.96 and 2,158.02

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Solution

The fourth proportional to 5,278.68, 7,917.96 and 2,158.02 is: 3,237.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.68 : 7,917.96 = 2,158.02 : x
  2. Step 2: Convert to fraction form
    5,278.68/7,917.96 = 2,158.02/x
  3. Step 3: Cross multiply
    5,278.68x = 7,917.96 × 2,158.02
  4. Step 4: Simplify right side
    5,278.68x = 17,087,116.04
  5. Step 5: Solve for x
    x = 17,087,116.04/5,278.68
  6. Step 6: Final answer
    x = 3,237.01

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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.