Home / 5,412.42-8,118.66-1,308.42

Finding the Fourth Proportional to 5,412.42, 8,118.66 and 1,308.42

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Solution

The fourth proportional to 5,412.42, 8,118.66 and 1,308.42 is: 1,962.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.42 : 8,118.66 = 1,308.42 : x
  2. Step 2: Convert to fraction form
    5,412.42/8,118.66 = 1,308.42/x
  3. Step 3: Cross multiply
    5,412.42x = 8,118.66 × 1,308.42
  4. Step 4: Simplify right side
    5,412.42x = 10,622,617.12
  5. Step 5: Solve for x
    x = 10,622,617.12/5,412.42
  6. Step 6: Final answer
    x = 1,962.64

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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.