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Finding the Fourth Proportional to 5,286.81, 7,295.86 and 2,929.09

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Solution

The fourth proportional to 5,286.81, 7,295.86 and 2,929.09 is: 4,042.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.81 : 7,295.86 = 2,929.09 : x
  2. Step 2: Convert to fraction form
    5,286.81/7,295.86 = 2,929.09/x
  3. Step 3: Cross multiply
    5,286.81x = 7,295.86 × 2,929.09
  4. Step 4: Simplify right side
    5,286.81x = 21,370,215.92
  5. Step 5: Solve for x
    x = 21,370,215.92/5,286.81
  6. Step 6: Final answer
    x = 4,042.18

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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.