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Finding the Fourth Proportional to 8,888.36, 13,354.40 and 6,690.42

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Solution

The fourth proportional to 8,888.36, 13,354.40 and 6,690.42 is: 10,052.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,888.36 : 13,354.40 = 6,690.42 : x
  2. Step 2: Convert to fraction form
    8,888.36/13,354.40 = 6,690.42/x
  3. Step 3: Cross multiply
    8,888.36x = 13,354.40 × 6,690.42
  4. Step 4: Simplify right side
    8,888.36x = 89,346,561.57
  5. Step 5: Solve for x
    x = 89,346,561.57/8,888.36
  6. Step 6: Final answer
    x = 10,052.09

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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.