Home / 2,399.68-3,612.14-2,189.48

Finding the Fourth Proportional to 2,399.68, 3,612.14 and 2,189.48

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Solution

The fourth proportional to 2,399.68, 3,612.14 and 2,189.48 is: 3,295.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.68 : 3,612.14 = 2,189.48 : x
  2. Step 2: Convert to fraction form
    2,399.68/3,612.14 = 2,189.48/x
  3. Step 3: Cross multiply
    2,399.68x = 3,612.14 × 2,189.48
  4. Step 4: Simplify right side
    2,399.68x = 7,908,720.12
  5. Step 5: Solve for x
    x = 7,908,720.12/2,399.68
  6. Step 6: Final answer
    x = 3,295.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.