Home / 2,130.28-3,195.48-1,205.68

Finding the Fourth Proportional to 2,130.28, 3,195.48 and 1,205.68

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Solution

The fourth proportional to 2,130.28, 3,195.48 and 1,205.68 is: 1,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.28 : 3,195.48 = 1,205.68 : x
  2. Step 2: Convert to fraction form
    2,130.28/3,195.48 = 1,205.68/x
  3. Step 3: Cross multiply
    2,130.28x = 3,195.48 × 1,205.68
  4. Step 4: Simplify right side
    2,130.28x = 3,852,726.33
  5. Step 5: Solve for x
    x = 3,852,726.33/2,130.28
  6. Step 6: Final answer
    x = 1,808.55

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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.