Home / 8,936.64-12,322.85-5,578.25

Finding the Fourth Proportional to 8,936.64, 12,322.85 and 5,578.25

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Solution

The fourth proportional to 8,936.64, 12,322.85 and 5,578.25 is: 7,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.64 : 12,322.85 = 5,578.25 : x
  2. Step 2: Convert to fraction form
    8,936.64/12,322.85 = 5,578.25/x
  3. Step 3: Cross multiply
    8,936.64x = 12,322.85 × 5,578.25
  4. Step 4: Simplify right side
    8,936.64x = 68,739,848.51
  5. Step 5: Solve for x
    x = 68,739,848.51/8,936.64
  6. Step 6: Final answer
    x = 7,691.91

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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.