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Finding the Fourth Proportional to 7,773.36, 11,641.04 and 4,078.72

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Solution

The fourth proportional to 7,773.36, 11,641.04 and 4,078.72 is: 6,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,773.36 : 11,641.04 = 4,078.72 : x
  2. Step 2: Convert to fraction form
    7,773.36/11,641.04 = 4,078.72/x
  3. Step 3: Cross multiply
    7,773.36x = 11,641.04 × 4,078.72
  4. Step 4: Simplify right side
    7,773.36x = 47,480,542.67
  5. Step 5: Solve for x
    x = 47,480,542.67/7,773.36
  6. Step 6: Final answer
    x = 6,108.11

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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.