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Finding the Fourth Proportional to 6,813.15, 9,402.65 and 3,788.66

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Solution

The fourth proportional to 6,813.15, 9,402.65 and 3,788.66 is: 5,228.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,813.15 : 9,402.65 = 3,788.66 : x
  2. Step 2: Convert to fraction form
    6,813.15/9,402.65 = 3,788.66/x
  3. Step 3: Cross multiply
    6,813.15x = 9,402.65 × 3,788.66
  4. Step 4: Simplify right side
    6,813.15x = 35,623,377.99
  5. Step 5: Solve for x
    x = 35,623,377.99/6,813.15
  6. Step 6: Final answer
    x = 5,228.62

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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.