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Finding the Fourth Proportional to 7,779.78, 11,671.22 and 2,233.18

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Solution

The fourth proportional to 7,779.78, 11,671.22 and 2,233.18 is: 3,350.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.78 : 11,671.22 = 2,233.18 : x
  2. Step 2: Convert to fraction form
    7,779.78/11,671.22 = 2,233.18/x
  3. Step 3: Cross multiply
    7,779.78x = 11,671.22 × 2,233.18
  4. Step 4: Simplify right side
    7,779.78x = 26,063,935.08
  5. Step 5: Solve for x
    x = 26,063,935.08/7,779.78
  6. Step 6: Final answer
    x = 3,350.21

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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.