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Finding the Fourth Proportional to 9,330.84, 12,878.32 and 5,354.55

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Solution

The fourth proportional to 9,330.84, 12,878.32 and 5,354.55 is: 7,390.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,330.84 : 12,878.32 = 5,354.55 : x
  2. Step 2: Convert to fraction form
    9,330.84/12,878.32 = 5,354.55/x
  3. Step 3: Cross multiply
    9,330.84x = 12,878.32 × 5,354.55
  4. Step 4: Simplify right side
    9,330.84x = 68,957,608.36
  5. Step 5: Solve for x
    x = 68,957,608.36/9,330.84
  6. Step 6: Final answer
    x = 7,390.29

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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.