Home / 5,150.10-7,107.68-2,912.46

Finding the Fourth Proportional to 5,150.10, 7,107.68 and 2,912.46

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Solution

The fourth proportional to 5,150.10, 7,107.68 and 2,912.46 is: 4,019.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,150.10 : 7,107.68 = 2,912.46 : x
  2. Step 2: Convert to fraction form
    5,150.10/7,107.68 = 2,912.46/x
  3. Step 3: Cross multiply
    5,150.10x = 7,107.68 × 2,912.46
  4. Step 4: Simplify right side
    5,150.10x = 20,700,833.69
  5. Step 5: Solve for x
    x = 20,700,833.69/5,150.10
  6. Step 6: Final answer
    x = 4,019.50

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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.