Home / 3,119.09-4,679.51-928.04

Finding the Fourth Proportional to 3,119.09, 4,679.51 and 928.04

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Solution

The fourth proportional to 3,119.09, 4,679.51 and 928.04 is: 1,392.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.09 : 4,679.51 = 928.04 : x
  2. Step 2: Convert to fraction form
    3,119.09/4,679.51 = 928.04/x
  3. Step 3: Cross multiply
    3,119.09x = 4,679.51 × 928.04
  4. Step 4: Simplify right side
    3,119.09x = 4,342,744.42
  5. Step 5: Solve for x
    x = 4,342,744.42/3,119.09
  6. Step 6: Final answer
    x = 1,392.31

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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.