Home / 3,412.37-5,118.30-1,331.98

Finding the Fourth Proportional to 3,412.37, 5,118.30 and 1,331.98

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Solution

The fourth proportional to 3,412.37, 5,118.30 and 1,331.98 is: 1,997.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.37 : 5,118.30 = 1,331.98 : x
  2. Step 2: Convert to fraction form
    3,412.37/5,118.30 = 1,331.98/x
  3. Step 3: Cross multiply
    3,412.37x = 5,118.30 × 1,331.98
  4. Step 4: Simplify right side
    3,412.37x = 6,817,460.44
  5. Step 5: Solve for x
    x = 6,817,460.44/3,412.37
  6. Step 6: Final answer
    x = 1,997.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.