Home / 2,455.15-3,390.60-1,961.02

Finding the Fourth Proportional to 2,455.15, 3,390.60 and 1,961.02

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Solution

The fourth proportional to 2,455.15, 3,390.60 and 1,961.02 is: 2,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.15 : 3,390.60 = 1,961.02 : x
  2. Step 2: Convert to fraction form
    2,455.15/3,390.60 = 1,961.02/x
  3. Step 3: Cross multiply
    2,455.15x = 3,390.60 × 1,961.02
  4. Step 4: Simplify right side
    2,455.15x = 6,649,034.41
  5. Step 5: Solve for x
    x = 6,649,034.41/2,455.15
  6. Step 6: Final answer
    x = 2,708.20

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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.