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Finding the Fourth Proportional to 6,688.84, 9,209.48 and 5,891.67

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Solution

The fourth proportional to 6,688.84, 9,209.48 and 5,891.67 is: 8,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,688.84 : 9,209.48 = 5,891.67 : x
  2. Step 2: Convert to fraction form
    6,688.84/9,209.48 = 5,891.67/x
  3. Step 3: Cross multiply
    6,688.84x = 9,209.48 × 5,891.67
  4. Step 4: Simplify right side
    6,688.84x = 54,259,217.03
  5. Step 5: Solve for x
    x = 54,259,217.03/6,688.84
  6. Step 6: Final answer
    x = 8,111.90

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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.