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Finding the Fourth Proportional to 9,107.91, 12,569.11 and 5,522.99

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Solution

The fourth proportional to 9,107.91, 12,569.11 and 5,522.99 is: 7,621.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.91 : 12,569.11 = 5,522.99 : x
  2. Step 2: Convert to fraction form
    9,107.91/12,569.11 = 5,522.99/x
  3. Step 3: Cross multiply
    9,107.91x = 12,569.11 × 5,522.99
  4. Step 4: Simplify right side
    9,107.91x = 69,418,992.19
  5. Step 5: Solve for x
    x = 69,418,992.19/9,107.91
  6. Step 6: Final answer
    x = 7,621.84

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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.