Home / 2,685.26-4,028.54-1,124.40

Finding the Fourth Proportional to 2,685.26, 4,028.54 and 1,124.40

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Solution

The fourth proportional to 2,685.26, 4,028.54 and 1,124.40 is: 1,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.26 : 4,028.54 = 1,124.40 : x
  2. Step 2: Convert to fraction form
    2,685.26/4,028.54 = 1,124.40/x
  3. Step 3: Cross multiply
    2,685.26x = 4,028.54 × 1,124.40
  4. Step 4: Simplify right side
    2,685.26x = 4,529,684.75
  5. Step 5: Solve for x
    x = 4,529,684.75/2,685.26
  6. Step 6: Final answer
    x = 1,686.87

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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.