Home / 8,936.15-12,331.89-5,398.70

Finding the Fourth Proportional to 8,936.15, 12,331.89 and 5,398.70

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Solution

The fourth proportional to 8,936.15, 12,331.89 and 5,398.70 is: 7,450.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.15 : 12,331.89 = 5,398.70 : x
  2. Step 2: Convert to fraction form
    8,936.15/12,331.89 = 5,398.70/x
  3. Step 3: Cross multiply
    8,936.15x = 12,331.89 × 5,398.70
  4. Step 4: Simplify right side
    8,936.15x = 66,576,112.88
  5. Step 5: Solve for x
    x = 66,576,112.88/8,936.15
  6. Step 6: Final answer
    x = 7,450.21

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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.