Home / 5,177.22-7,765.76-1,281.64

Finding the Fourth Proportional to 5,177.22, 7,765.76 and 1,281.64

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Solution

The fourth proportional to 5,177.22, 7,765.76 and 1,281.64 is: 1,922.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.22 : 7,765.76 = 1,281.64 : x
  2. Step 2: Convert to fraction form
    5,177.22/7,765.76 = 1,281.64/x
  3. Step 3: Cross multiply
    5,177.22x = 7,765.76 × 1,281.64
  4. Step 4: Simplify right side
    5,177.22x = 9,952,908.65
  5. Step 5: Solve for x
    x = 9,952,908.65/5,177.22
  6. Step 6: Final answer
    x = 1,922.44

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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.