Home / 2,155.36-3,230.16-998.56

Finding the Fourth Proportional to 2,155.36, 3,230.16 and 998.56

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Solution

The fourth proportional to 2,155.36, 3,230.16 and 998.56 is: 1,496.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.36 : 3,230.16 = 998.56 : x
  2. Step 2: Convert to fraction form
    2,155.36/3,230.16 = 998.56/x
  3. Step 3: Cross multiply
    2,155.36x = 3,230.16 × 998.56
  4. Step 4: Simplify right side
    2,155.36x = 3,225,508.57
  5. Step 5: Solve for x
    x = 3,225,508.57/2,155.36
  6. Step 6: Final answer
    x = 1,496.51

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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.