Home / 8,639.76-11,924.82-6,119.22

Finding the Fourth Proportional to 8,639.76, 11,924.82 and 6,119.22

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Solution

The fourth proportional to 8,639.76, 11,924.82 and 6,119.22 is: 8,445.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.76 : 11,924.82 = 6,119.22 : x
  2. Step 2: Convert to fraction form
    8,639.76/11,924.82 = 6,119.22/x
  3. Step 3: Cross multiply
    8,639.76x = 11,924.82 × 6,119.22
  4. Step 4: Simplify right side
    8,639.76x = 72,970,597.04
  5. Step 5: Solve for x
    x = 72,970,597.04/8,639.76
  6. Step 6: Final answer
    x = 8,445.91

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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.