Home / 5,725-8,589.12-2,438.74

Finding the Fourth Proportional to 5,725, 8,589.12 and 2,438.74

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Solution

The fourth proportional to 5,725, 8,589.12 and 2,438.74 is: 3,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,725 : 8,589.12 = 2,438.74 : x
  2. Step 2: Convert to fraction form
    5,725/8,589.12 = 2,438.74/x
  3. Step 3: Cross multiply
    5,725x = 8,589.12 × 2,438.74
  4. Step 4: Simplify right side
    5,725x = 20,946,630.51
  5. Step 5: Solve for x
    x = 20,946,630.51/5,725
  6. Step 6: Final answer
    x = 3,658.80

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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.