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Finding the Fourth Proportional to 6,685.52, 9,221.74 and 5,362.40

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Solution

The fourth proportional to 6,685.52, 9,221.74 and 5,362.40 is: 7,396.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,685.52 : 9,221.74 = 5,362.40 : x
  2. Step 2: Convert to fraction form
    6,685.52/9,221.74 = 5,362.40/x
  3. Step 3: Cross multiply
    6,685.52x = 9,221.74 × 5,362.40
  4. Step 4: Simplify right side
    6,685.52x = 49,450,658.58
  5. Step 5: Solve for x
    x = 49,450,658.58/6,685.52
  6. Step 6: Final answer
    x = 7,396.68

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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.