Home / 5,412.72-8,119.50-1,715.16

Finding the Fourth Proportional to 5,412.72, 8,119.50 and 1,715.16

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Solution

The fourth proportional to 5,412.72, 8,119.50 and 1,715.16 is: 2,572.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.72 : 8,119.50 = 1,715.16 : x
  2. Step 2: Convert to fraction form
    5,412.72/8,119.50 = 1,715.16/x
  3. Step 3: Cross multiply
    5,412.72x = 8,119.50 × 1,715.16
  4. Step 4: Simplify right side
    5,412.72x = 13,926,241.62
  5. Step 5: Solve for x
    x = 13,926,241.62/5,412.72
  6. Step 6: Final answer
    x = 2,572.87

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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.