Home / 2,863.89-4,296.38-1,220.40

Finding the Fourth Proportional to 2,863.89, 4,296.38 and 1,220.40

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Solution

The fourth proportional to 2,863.89, 4,296.38 and 1,220.40 is: 1,830.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,863.89 : 4,296.38 = 1,220.40 : x
  2. Step 2: Convert to fraction form
    2,863.89/4,296.38 = 1,220.40/x
  3. Step 3: Cross multiply
    2,863.89x = 4,296.38 × 1,220.40
  4. Step 4: Simplify right side
    2,863.89x = 5,243,296.05
  5. Step 5: Solve for x
    x = 5,243,296.05/2,863.89
  6. Step 6: Final answer
    x = 1,830.83

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1.5x scale

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.