Home / 8,322.78-11,487.36-5,490.66

Finding the Fourth Proportional to 8,322.78, 11,487.36 and 5,490.66

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Solution

The fourth proportional to 8,322.78, 11,487.36 and 5,490.66 is: 7,578.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,322.78 : 11,487.36 = 5,490.66 : x
  2. Step 2: Convert to fraction form
    8,322.78/11,487.36 = 5,490.66/x
  3. Step 3: Cross multiply
    8,322.78x = 11,487.36 × 5,490.66
  4. Step 4: Simplify right side
    8,322.78x = 63,073,188.06
  5. Step 5: Solve for x
    x = 63,073,188.06/8,322.78
  6. Step 6: Final answer
    x = 7,578.38

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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.