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Finding the Fourth Proportional to 7,798.77, 11,698.29 and 2,865.78

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Solution

The fourth proportional to 7,798.77, 11,698.29 and 2,865.78 is: 4,298.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798.77 : 11,698.29 = 2,865.78 : x
  2. Step 2: Convert to fraction form
    7,798.77/11,698.29 = 2,865.78/x
  3. Step 3: Cross multiply
    7,798.77x = 11,698.29 × 2,865.78
  4. Step 4: Simplify right side
    7,798.77x = 33,524,725.52
  5. Step 5: Solve for x
    x = 33,524,725.52/7,798.77
  6. Step 6: Final answer
    x = 4,298.72

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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.