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Finding the Fourth Proportional to 6,681, 9,220.16 and 3,993.42

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Solution

The fourth proportional to 6,681, 9,220.16 and 3,993.42 is: 5,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,681 : 9,220.16 = 3,993.42 : x
  2. Step 2: Convert to fraction form
    6,681/9,220.16 = 3,993.42/x
  3. Step 3: Cross multiply
    6,681x = 9,220.16 × 3,993.42
  4. Step 4: Simplify right side
    6,681x = 36,819,971.35
  5. Step 5: Solve for x
    x = 36,819,971.35/6,681
  6. Step 6: Final answer
    x = 5,511.15

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1.5x scale

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.