Home / 3,130.28-4,694.94-939.24

Finding the Fourth Proportional to 3,130.28, 4,694.94 and 939.24

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Solution

The fourth proportional to 3,130.28, 4,694.94 and 939.24 is: 1,408.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.28 : 4,694.94 = 939.24 : x
  2. Step 2: Convert to fraction form
    3,130.28/4,694.94 = 939.24/x
  3. Step 3: Cross multiply
    3,130.28x = 4,694.94 × 939.24
  4. Step 4: Simplify right side
    3,130.28x = 4,409,675.45
  5. Step 5: Solve for x
    x = 4,409,675.45/3,130.28
  6. Step 6: Final answer
    x = 1,408.72

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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.