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Finding the Fourth Proportional to 6,894.52, 9,513.12 and 3,909.67

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Solution

The fourth proportional to 6,894.52, 9,513.12 and 3,909.67 is: 5,394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,894.52 : 9,513.12 = 3,909.67 : x
  2. Step 2: Convert to fraction form
    6,894.52/9,513.12 = 3,909.67/x
  3. Step 3: Cross multiply
    6,894.52x = 9,513.12 × 3,909.67
  4. Step 4: Simplify right side
    6,894.52x = 37,193,159.87
  5. Step 5: Solve for x
    x = 37,193,159.87/6,894.52
  6. Step 6: Final answer
    x = 5,394.60

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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.