Home / 8,557.82-11,815.46-5,728.84

Finding the Fourth Proportional to 8,557.82, 11,815.46 and 5,728.84

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Solution

The fourth proportional to 8,557.82, 11,815.46 and 5,728.84 is: 7,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.82 : 11,815.46 = 5,728.84 : x
  2. Step 2: Convert to fraction form
    8,557.82/11,815.46 = 5,728.84/x
  3. Step 3: Cross multiply
    8,557.82x = 11,815.46 × 5,728.84
  4. Step 4: Simplify right side
    8,557.82x = 67,688,879.87
  5. Step 5: Solve for x
    x = 67,688,879.87/8,557.82
  6. Step 6: Final answer
    x = 7,909.59

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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.