Home / 5,178.74-7,765.25-2,055.56

Finding the Fourth Proportional to 5,178.74, 7,765.25 and 2,055.56

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Solution

The fourth proportional to 5,178.74, 7,765.25 and 2,055.56 is: 3,082.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.74 : 7,765.25 = 2,055.56 : x
  2. Step 2: Convert to fraction form
    5,178.74/7,765.25 = 2,055.56/x
  3. Step 3: Cross multiply
    5,178.74x = 7,765.25 × 2,055.56
  4. Step 4: Simplify right side
    5,178.74x = 15,961,888.19
  5. Step 5: Solve for x
    x = 15,961,888.19/5,178.74
  6. Step 6: Final answer
    x = 3,082.20

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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.