Home / 8,090.40-12,134.78-2,543.59

Finding the Fourth Proportional to 8,090.40, 12,134.78 and 2,543.59

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Solution

The fourth proportional to 8,090.40, 12,134.78 and 2,543.59 is: 3,815.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,090.40 : 12,134.78 = 2,543.59 : x
  2. Step 2: Convert to fraction form
    8,090.40/12,134.78 = 2,543.59/x
  3. Step 3: Cross multiply
    8,090.40x = 12,134.78 × 2,543.59
  4. Step 4: Simplify right side
    8,090.40x = 30,865,905.06
  5. Step 5: Solve for x
    x = 30,865,905.06/8,090.40
  6. Step 6: Final answer
    x = 3,815.13

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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.