Home / 2,418.07-3,627.70-686.69

Finding the Fourth Proportional to 2,418.07, 3,627.70 and 686.69

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Solution

The fourth proportional to 2,418.07, 3,627.70 and 686.69 is: 1,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.07 : 3,627.70 = 686.69 : x
  2. Step 2: Convert to fraction form
    2,418.07/3,627.70 = 686.69/x
  3. Step 3: Cross multiply
    2,418.07x = 3,627.70 × 686.69
  4. Step 4: Simplify right side
    2,418.07x = 2,491,105.31
  5. Step 5: Solve for x
    x = 2,491,105.31/2,418.07
  6. Step 6: Final answer
    x = 1,030.20

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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.