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Finding the Fourth Proportional to 8,383.95, 12,564.14 and 6,621.18

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Solution

The fourth proportional to 8,383.95, 12,564.14 and 6,621.18 is: 9,922.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,383.95 : 12,564.14 = 6,621.18 : x
  2. Step 2: Convert to fraction form
    8,383.95/12,564.14 = 6,621.18/x
  3. Step 3: Cross multiply
    8,383.95x = 12,564.14 × 6,621.18
  4. Step 4: Simplify right side
    8,383.95x = 83,189,399.38
  5. Step 5: Solve for x
    x = 83,189,399.38/8,383.95
  6. Step 6: Final answer
    x = 9,922.46

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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.