Home / 7,412.40-11,118.60-2,218.28

Finding the Fourth Proportional to 7,412.40, 11,118.60 and 2,218.28

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Solution

The fourth proportional to 7,412.40, 11,118.60 and 2,218.28 is: 3,327.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.40 : 11,118.60 = 2,218.28 : x
  2. Step 2: Convert to fraction form
    7,412.40/11,118.60 = 2,218.28/x
  3. Step 3: Cross multiply
    7,412.40x = 11,118.60 × 2,218.28
  4. Step 4: Simplify right side
    7,412.40x = 24,664,112.42
  5. Step 5: Solve for x
    x = 24,664,112.42/7,412.40
  6. Step 6: Final answer
    x = 3,327.41

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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.