Home / 2,419.41-3,340.70-1,945.78

Finding the Fourth Proportional to 2,419.41, 3,340.70 and 1,945.78

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Solution

The fourth proportional to 2,419.41, 3,340.70 and 1,945.78 is: 2,686.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.41 : 3,340.70 = 1,945.78 : x
  2. Step 2: Convert to fraction form
    2,419.41/3,340.70 = 1,945.78/x
  3. Step 3: Cross multiply
    2,419.41x = 3,340.70 × 1,945.78
  4. Step 4: Simplify right side
    2,419.41x = 6,500,267.25
  5. Step 5: Solve for x
    x = 6,500,267.25/2,419.41
  6. Step 6: Final answer
    x = 2,686.72

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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.