Home / 5,178.11-7,765.36-1,479.35

Finding the Fourth Proportional to 5,178.11, 7,765.36 and 1,479.35

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Solution

The fourth proportional to 5,178.11, 7,765.36 and 1,479.35 is: 2,218.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.11 : 7,765.36 = 1,479.35 : x
  2. Step 2: Convert to fraction form
    5,178.11/7,765.36 = 1,479.35/x
  3. Step 3: Cross multiply
    5,178.11x = 7,765.36 × 1,479.35
  4. Step 4: Simplify right side
    5,178.11x = 11,487,685.32
  5. Step 5: Solve for x
    x = 11,487,685.32/5,178.11
  6. Step 6: Final answer
    x = 2,218.51

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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.