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Finding the Fourth Proportional to 8,815.55, 13,218.99 and 4,368.08

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Solution

The fourth proportional to 8,815.55, 13,218.99 and 4,368.08 is: 6,549.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.55 : 13,218.99 = 4,368.08 : x
  2. Step 2: Convert to fraction form
    8,815.55/13,218.99 = 4,368.08/x
  3. Step 3: Cross multiply
    8,815.55x = 13,218.99 × 4,368.08
  4. Step 4: Simplify right side
    8,815.55x = 57,741,605.84
  5. Step 5: Solve for x
    x = 57,741,605.84/8,815.55
  6. Step 6: Final answer
    x = 6,549.97

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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.