Home / 2,319.70-3,198.78-1,612.35

Finding the Fourth Proportional to 2,319.70, 3,198.78 and 1,612.35

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Solution

The fourth proportional to 2,319.70, 3,198.78 and 1,612.35 is: 2,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.70 : 3,198.78 = 1,612.35 : x
  2. Step 2: Convert to fraction form
    2,319.70/3,198.78 = 1,612.35/x
  3. Step 3: Cross multiply
    2,319.70x = 3,198.78 × 1,612.35
  4. Step 4: Simplify right side
    2,319.70x = 5,157,552.93
  5. Step 5: Solve for x
    x = 5,157,552.93/2,319.70
  6. Step 6: Final answer
    x = 2,223.37

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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.