Home / 8,090.89-12,132.99-3,159.81

Finding the Fourth Proportional to 8,090.89, 12,132.99 and 3,159.81

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Solution

The fourth proportional to 8,090.89, 12,132.99 and 3,159.81 is: 4,738.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,090.89 : 12,132.99 = 3,159.81 : x
  2. Step 2: Convert to fraction form
    8,090.89/12,132.99 = 3,159.81/x
  3. Step 3: Cross multiply
    8,090.89x = 12,132.99 × 3,159.81
  4. Step 4: Simplify right side
    8,090.89x = 38,337,943.13
  5. Step 5: Solve for x
    x = 38,337,943.13/8,090.89
  6. Step 6: Final answer
    x = 4,738.41

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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.