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Finding the Fourth Proportional to 6,788.68, 9,369.89 and 4,135.53

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Solution

The fourth proportional to 6,788.68, 9,369.89 and 4,135.53 is: 5,707.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,788.68 : 9,369.89 = 4,135.53 : x
  2. Step 2: Convert to fraction form
    6,788.68/9,369.89 = 4,135.53/x
  3. Step 3: Cross multiply
    6,788.68x = 9,369.89 × 4,135.53
  4. Step 4: Simplify right side
    6,788.68x = 38,749,461.19
  5. Step 5: Solve for x
    x = 38,749,461.19/6,788.68
  6. Step 6: Final answer
    x = 5,707.95

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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.