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Finding the Fourth Proportional to 8,394.62, 11,585.15 and 5,557.11

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Solution

The fourth proportional to 8,394.62, 11,585.15 and 5,557.11 is: 7,669.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.62 : 11,585.15 = 5,557.11 : x
  2. Step 2: Convert to fraction form
    8,394.62/11,585.15 = 5,557.11/x
  3. Step 3: Cross multiply
    8,394.62x = 11,585.15 × 5,557.11
  4. Step 4: Simplify right side
    8,394.62x = 64,379,952.92
  5. Step 5: Solve for x
    x = 64,379,952.92/8,394.62
  6. Step 6: Final answer
    x = 7,669.19

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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.