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Finding the Fourth Proportional to 9,354.41, 12,908.16 and 5,162.39

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Solution

The fourth proportional to 9,354.41, 12,908.16 and 5,162.39 is: 7,123.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,354.41 : 12,908.16 = 5,162.39 : x
  2. Step 2: Convert to fraction form
    9,354.41/12,908.16 = 5,162.39/x
  3. Step 3: Cross multiply
    9,354.41x = 12,908.16 × 5,162.39
  4. Step 4: Simplify right side
    9,354.41x = 66,636,891.56
  5. Step 5: Solve for x
    x = 66,636,891.56/9,354.41
  6. Step 6: Final answer
    x = 7,123.58

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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.