Home / 8,101.17-12,156.53-3,420.87

Finding the Fourth Proportional to 8,101.17, 12,156.53 and 3,420.87

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Solution

The fourth proportional to 8,101.17, 12,156.53 and 3,420.87 is: 5,133.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,101.17 : 12,156.53 = 3,420.87 : x
  2. Step 2: Convert to fraction form
    8,101.17/12,156.53 = 3,420.87/x
  3. Step 3: Cross multiply
    8,101.17x = 12,156.53 × 3,420.87
  4. Step 4: Simplify right side
    8,101.17x = 41,585,908.78
  5. Step 5: Solve for x
    x = 41,585,908.78/8,101.17
  6. Step 6: Final answer
    x = 5,133.32

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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.