Home / 2,008.19-2,770.40-1,261.78

Finding the Fourth Proportional to 2,008.19, 2,770.40 and 1,261.78

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Solution

The fourth proportional to 2,008.19, 2,770.40 and 1,261.78 is: 1,740.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.19 : 2,770.40 = 1,261.78 : x
  2. Step 2: Convert to fraction form
    2,008.19/2,770.40 = 1,261.78/x
  3. Step 3: Cross multiply
    2,008.19x = 2,770.40 × 1,261.78
  4. Step 4: Simplify right side
    2,008.19x = 3,495,631.54
  5. Step 5: Solve for x
    x = 3,495,631.54/2,008.19
  6. Step 6: Final answer
    x = 1,740.69

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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.