Home / 8,127.29-12,187.89-3,197.63

Finding the Fourth Proportional to 8,127.29, 12,187.89 and 3,197.63

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Solution

The fourth proportional to 8,127.29, 12,187.89 and 3,197.63 is: 4,795.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.29 : 12,187.89 = 3,197.63 : x
  2. Step 2: Convert to fraction form
    8,127.29/12,187.89 = 3,197.63/x
  3. Step 3: Cross multiply
    8,127.29x = 12,187.89 × 3,197.63
  4. Step 4: Simplify right side
    8,127.29x = 38,972,301.76
  5. Step 5: Solve for x
    x = 38,972,301.76/8,127.29
  6. Step 6: Final answer
    x = 4,795.24

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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.