Home / 5,115.86-7,673.04-1,418.34

Finding the Fourth Proportional to 5,115.86, 7,673.04 and 1,418.34

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Solution

The fourth proportional to 5,115.86, 7,673.04 and 1,418.34 is: 2,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.86 : 7,673.04 = 1,418.34 : x
  2. Step 2: Convert to fraction form
    5,115.86/7,673.04 = 1,418.34/x
  3. Step 3: Cross multiply
    5,115.86x = 7,673.04 × 1,418.34
  4. Step 4: Simplify right side
    5,115.86x = 10,882,979.55
  5. Step 5: Solve for x
    x = 10,882,979.55/5,115.86
  6. Step 6: Final answer
    x = 2,127.30

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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.