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Finding the Fourth Proportional to 8,015.90, 11,061.99 and 4,479.17

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Solution

The fourth proportional to 8,015.90, 11,061.99 and 4,479.17 is: 6,181.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,015.90 : 11,061.99 = 4,479.17 : x
  2. Step 2: Convert to fraction form
    8,015.90/11,061.99 = 4,479.17/x
  3. Step 3: Cross multiply
    8,015.90x = 11,061.99 × 4,479.17
  4. Step 4: Simplify right side
    8,015.90x = 49,548,478.44
  5. Step 5: Solve for x
    x = 49,548,478.44/8,015.90
  6. Step 6: Final answer
    x = 6,181.28

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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.