Home / 2,799.70-4,199.55-2,143.60

Finding the Fourth Proportional to 2,799.70, 4,199.55 and 2,143.60

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Solution

The fourth proportional to 2,799.70, 4,199.55 and 2,143.60 is: 3,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.70 : 4,199.55 = 2,143.60 : x
  2. Step 2: Convert to fraction form
    2,799.70/4,199.55 = 2,143.60/x
  3. Step 3: Cross multiply
    2,799.70x = 4,199.55 × 2,143.60
  4. Step 4: Simplify right side
    2,799.70x = 9,002,155.38
  5. Step 5: Solve for x
    x = 9,002,155.38/2,799.70
  6. Step 6: Final answer
    x = 3,215.40

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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.