Home / 5,151.75-7,108.60-2,912.91

Finding the Fourth Proportional to 5,151.75, 7,108.60 and 2,912.91

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Solution

The fourth proportional to 5,151.75, 7,108.60 and 2,912.91 is: 4,019.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.75 : 7,108.60 = 2,912.91 : x
  2. Step 2: Convert to fraction form
    5,151.75/7,108.60 = 2,912.91/x
  3. Step 3: Cross multiply
    5,151.75x = 7,108.60 × 2,912.91
  4. Step 4: Simplify right side
    5,151.75x = 20,706,712.03
  5. Step 5: Solve for x
    x = 20,706,712.03/5,151.75
  6. Step 6: Final answer
    x = 4,019.35

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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.