Home / 5,150.18-7,107.45-2,912.30

Finding the Fourth Proportional to 5,150.18, 7,107.45 and 2,912.30

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Solution

The fourth proportional to 5,150.18, 7,107.45 and 2,912.30 is: 4,019.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,150.18 : 7,107.45 = 2,912.30 : x
  2. Step 2: Convert to fraction form
    5,150.18/7,107.45 = 2,912.30/x
  3. Step 3: Cross multiply
    5,150.18x = 7,107.45 × 2,912.30
  4. Step 4: Simplify right side
    5,150.18x = 20,699,046.81
  5. Step 5: Solve for x
    x = 20,699,046.81/5,150.18
  6. Step 6: Final answer
    x = 4,019.09

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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.