Home / 4,757.12-7,121.80-2,776.68

Finding the Fourth Proportional to 4,757.12, 7,121.80 and 2,776.68

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Solution

The fourth proportional to 4,757.12, 7,121.80 and 2,776.68 is: 4,156.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,757.12 : 7,121.80 = 2,776.68 : x
  2. Step 2: Convert to fraction form
    4,757.12/7,121.80 = 2,776.68/x
  3. Step 3: Cross multiply
    4,757.12x = 7,121.80 × 2,776.68
  4. Step 4: Simplify right side
    4,757.12x = 19,774,959.62
  5. Step 5: Solve for x
    x = 19,774,959.62/4,757.12
  6. Step 6: Final answer
    x = 4,156.92

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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.