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Finding the Fourth Proportional to 8,858.16, 12,223.80 and 4,878.54

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Solution

The fourth proportional to 8,858.16, 12,223.80 and 4,878.54 is: 6,732.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.16 : 12,223.80 = 4,878.54 : x
  2. Step 2: Convert to fraction form
    8,858.16/12,223.80 = 4,878.54/x
  3. Step 3: Cross multiply
    8,858.16x = 12,223.80 × 4,878.54
  4. Step 4: Simplify right side
    8,858.16x = 59,634,297.25
  5. Step 5: Solve for x
    x = 59,634,297.25/8,858.16
  6. Step 6: Final answer
    x = 6,732.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.