Home / 5,150.75-7,107.23-2,911.91

Finding the Fourth Proportional to 5,150.75, 7,107.23 and 2,911.91

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Solution

The fourth proportional to 5,150.75, 7,107.23 and 2,911.91 is: 4,017.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,150.75 : 7,107.23 = 2,911.91 : x
  2. Step 2: Convert to fraction form
    5,150.75/7,107.23 = 2,911.91/x
  3. Step 3: Cross multiply
    5,150.75x = 7,107.23 × 2,911.91
  4. Step 4: Simplify right side
    5,150.75x = 20,695,599.55
  5. Step 5: Solve for x
    x = 20,695,599.55/5,150.75
  6. Step 6: Final answer
    x = 4,017.98

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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.