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Finding the Fourth Proportional to 7,798.92, 11,698 and 2,868.21

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Solution

The fourth proportional to 7,798.92, 11,698 and 2,868.21 is: 4,302.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798.92 : 11,698 = 2,868.21 : x
  2. Step 2: Convert to fraction form
    7,798.92/11,698 = 2,868.21/x
  3. Step 3: Cross multiply
    7,798.92x = 11,698 × 2,868.21
  4. Step 4: Simplify right side
    7,798.92x = 33,552,320.58
  5. Step 5: Solve for x
    x = 33,552,320.58/7,798.92
  6. Step 6: Final answer
    x = 4,302.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.