Home / 5,412.88-8,119.55-1,715.38

Finding the Fourth Proportional to 5,412.88, 8,119.55 and 1,715.38

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Solution

The fourth proportional to 5,412.88, 8,119.55 and 1,715.38 is: 2,573.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.88 : 8,119.55 = 1,715.38 : x
  2. Step 2: Convert to fraction form
    5,412.88/8,119.55 = 1,715.38/x
  3. Step 3: Cross multiply
    5,412.88x = 8,119.55 × 1,715.38
  4. Step 4: Simplify right side
    5,412.88x = 13,928,073.08
  5. Step 5: Solve for x
    x = 13,928,073.08/5,412.88
  6. Step 6: Final answer
    x = 2,573.14

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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.