Home / 5,422.79-8,126.90-2,135.00

Finding the Fourth Proportional to 5,422.79, 8,126.90 and 2,135.00

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Solution

The fourth proportional to 5,422.79, 8,126.90 and 2,135.00 is: 3,199.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.79 : 8,126.90 = 2,135.00 : x
  2. Step 2: Convert to fraction form
    5,422.79/8,126.90 = 2,135.00/x
  3. Step 3: Cross multiply
    5,422.79x = 8,126.90 × 2,135.00
  4. Step 4: Simplify right side
    5,422.79x = 17,350,949.15
  5. Step 5: Solve for x
    x = 17,350,949.15/5,422.79
  6. Step 6: Final answer
    x = 3,199.63

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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.