Home / 2,852.39-3,938.10-2,187.97

Finding the Fourth Proportional to 2,852.39, 3,938.10 and 2,187.97

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Solution

The fourth proportional to 2,852.39, 3,938.10 and 2,187.97 is: 3,020.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,852.39 : 3,938.10 = 2,187.97 : x
  2. Step 2: Convert to fraction form
    2,852.39/3,938.10 = 2,187.97/x
  3. Step 3: Cross multiply
    2,852.39x = 3,938.10 × 2,187.97
  4. Step 4: Simplify right side
    2,852.39x = 8,616,444.66
  5. Step 5: Solve for x
    x = 8,616,444.66/2,852.39
  6. Step 6: Final answer
    x = 3,020.78

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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.