Home / 5,107.79-7,049.51-3,119.50

Finding the Fourth Proportional to 5,107.79, 7,049.51 and 3,119.50

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Solution

The fourth proportional to 5,107.79, 7,049.51 and 3,119.50 is: 4,305.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.79 : 7,049.51 = 3,119.50 : x
  2. Step 2: Convert to fraction form
    5,107.79/7,049.51 = 3,119.50/x
  3. Step 3: Cross multiply
    5,107.79x = 7,049.51 × 3,119.50
  4. Step 4: Simplify right side
    5,107.79x = 21,990,946.45
  5. Step 5: Solve for x
    x = 21,990,946.45/5,107.79
  6. Step 6: Final answer
    x = 4,305.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.