Home / 5,780-8,669.44-2,658.72

Finding the Fourth Proportional to 5,780, 8,669.44 and 2,658.72

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Solution

The fourth proportional to 5,780, 8,669.44 and 2,658.72 is: 3,987.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780 : 8,669.44 = 2,658.72 : x
  2. Step 2: Convert to fraction form
    5,780/8,669.44 = 2,658.72/x
  3. Step 3: Cross multiply
    5,780x = 8,669.44 × 2,658.72
  4. Step 4: Simplify right side
    5,780x = 23,049,613.52
  5. Step 5: Solve for x
    x = 23,049,613.52/5,780
  6. Step 6: Final answer
    x = 3,987.82

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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.