Home / 8,138.25-12,207.51-3,521.25

Finding the Fourth Proportional to 8,138.25, 12,207.51 and 3,521.25

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Solution

The fourth proportional to 8,138.25, 12,207.51 and 3,521.25 is: 5,281.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.25 : 12,207.51 = 3,521.25 : x
  2. Step 2: Convert to fraction form
    8,138.25/12,207.51 = 3,521.25/x
  3. Step 3: Cross multiply
    8,138.25x = 12,207.51 × 3,521.25
  4. Step 4: Simplify right side
    8,138.25x = 42,985,694.59
  5. Step 5: Solve for x
    x = 42,985,694.59/8,138.25
  6. Step 6: Final answer
    x = 5,281.93

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1.5x scale

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.