Home / 2,418.08-3,627.18-686.72

Finding the Fourth Proportional to 2,418.08, 3,627.18 and 686.72

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Solution

The fourth proportional to 2,418.08, 3,627.18 and 686.72 is: 1,030.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.08 : 3,627.18 = 686.72 : x
  2. Step 2: Convert to fraction form
    2,418.08/3,627.18 = 686.72/x
  3. Step 3: Cross multiply
    2,418.08x = 3,627.18 × 686.72
  4. Step 4: Simplify right side
    2,418.08x = 2,490,857.05
  5. Step 5: Solve for x
    x = 2,490,857.05/2,418.08
  6. Step 6: Final answer
    x = 1,030.10

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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.