Home / 3,099.16-4,272.85-1,918.18

Finding the Fourth Proportional to 3,099.16, 4,272.85 and 1,918.18

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Solution

The fourth proportional to 3,099.16, 4,272.85 and 1,918.18 is: 2,644.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.16 : 4,272.85 = 1,918.18 : x
  2. Step 2: Convert to fraction form
    3,099.16/4,272.85 = 1,918.18/x
  3. Step 3: Cross multiply
    3,099.16x = 4,272.85 × 1,918.18
  4. Step 4: Simplify right side
    3,099.16x = 8,196,103.15
  5. Step 5: Solve for x
    x = 8,196,103.15/3,099.16
  6. Step 6: Final answer
    x = 2,644.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.