Home / 2,677.60-4,017.30-1,291.78

Finding the Fourth Proportional to 2,677.60, 4,017.30 and 1,291.78

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Solution

The fourth proportional to 2,677.60, 4,017.30 and 1,291.78 is: 1,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,677.60 : 4,017.30 = 1,291.78 : x
  2. Step 2: Convert to fraction form
    2,677.60/4,017.30 = 1,291.78/x
  3. Step 3: Cross multiply
    2,677.60x = 4,017.30 × 1,291.78
  4. Step 4: Simplify right side
    2,677.60x = 5,189,467.79
  5. Step 5: Solve for x
    x = 5,189,467.79/2,677.60
  6. Step 6: Final answer
    x = 1,938.10

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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.