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Finding the Fourth Proportional to 8,879.78, 13,252.14 and 7,895.66

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Solution

The fourth proportional to 8,879.78, 13,252.14 and 7,895.66 is: 11,783.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.78 : 13,252.14 = 7,895.66 : x
  2. Step 2: Convert to fraction form
    8,879.78/13,252.14 = 7,895.66/x
  3. Step 3: Cross multiply
    8,879.78x = 13,252.14 × 7,895.66
  4. Step 4: Simplify right side
    8,879.78x = 104,634,391.71
  5. Step 5: Solve for x
    x = 104,634,391.71/8,879.78
  6. Step 6: Final answer
    x = 11,783.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.