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Finding the Fourth Proportional to 9,384.65, 12,881.83 and 8,298.62

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Solution

The fourth proportional to 9,384.65, 12,881.83 and 8,298.62 is: 11,391.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,384.65 : 12,881.83 = 8,298.62 : x
  2. Step 2: Convert to fraction form
    9,384.65/12,881.83 = 8,298.62/x
  3. Step 3: Cross multiply
    9,384.65x = 12,881.83 × 8,298.62
  4. Step 4: Simplify right side
    9,384.65x = 106,901,370.58
  5. Step 5: Solve for x
    x = 106,901,370.58/9,384.65
  6. Step 6: Final answer
    x = 11,391.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.