Home / 7,854.12-11,781.90-2,010.78

Finding the Fourth Proportional to 7,854.12, 11,781.90 and 2,010.78

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Solution

The fourth proportional to 7,854.12, 11,781.90 and 2,010.78 is: 3,016.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.12 : 11,781.90 = 2,010.78 : x
  2. Step 2: Convert to fraction form
    7,854.12/11,781.90 = 2,010.78/x
  3. Step 3: Cross multiply
    7,854.12x = 11,781.90 × 2,010.78
  4. Step 4: Simplify right side
    7,854.12x = 23,690,808.88
  5. Step 5: Solve for x
    x = 23,690,808.88/7,854.12
  6. Step 6: Final answer
    x = 3,016.35

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1.5x scale

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.