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Finding the Fourth Proportional to 9,369.68, 12,912.35 and 6,712.47

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Solution

The fourth proportional to 9,369.68, 12,912.35 and 6,712.47 is: 9,250.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.68 : 12,912.35 = 6,712.47 : x
  2. Step 2: Convert to fraction form
    9,369.68/12,912.35 = 6,712.47/x
  3. Step 3: Cross multiply
    9,369.68x = 12,912.35 × 6,712.47
  4. Step 4: Simplify right side
    9,369.68x = 86,673,728.44
  5. Step 5: Solve for x
    x = 86,673,728.44/9,369.68
  6. Step 6: Final answer
    x = 9,250.45

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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.