Home / 8,975.25-13,462.88-3,131.91

Finding the Fourth Proportional to 8,975.25, 13,462.88 and 3,131.91

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Solution

The fourth proportional to 8,975.25, 13,462.88 and 3,131.91 is: 4,697.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.25 : 13,462.88 = 3,131.91 : x
  2. Step 2: Convert to fraction form
    8,975.25/13,462.88 = 3,131.91/x
  3. Step 3: Cross multiply
    8,975.25x = 13,462.88 × 3,131.91
  4. Step 4: Simplify right side
    8,975.25x = 42,164,512.84
  5. Step 5: Solve for x
    x = 42,164,512.84/8,975.25
  6. Step 6: Final answer
    x = 4,697.87

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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.