Home / 5,178.14-7,767.30-1,715.48

Finding the Fourth Proportional to 5,178.14, 7,767.30 and 1,715.48

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Solution

The fourth proportional to 5,178.14, 7,767.30 and 1,715.48 is: 2,573.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.14 : 7,767.30 = 1,715.48 : x
  2. Step 2: Convert to fraction form
    5,178.14/7,767.30 = 1,715.48/x
  3. Step 3: Cross multiply
    5,178.14x = 7,767.30 × 1,715.48
  4. Step 4: Simplify right side
    5,178.14x = 13,324,647.80
  5. Step 5: Solve for x
    x = 13,324,647.80/5,178.14
  6. Step 6: Final answer
    x = 2,573.25

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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.