Home / 5,170.55-7,135.37-2,812.69

Finding the Fourth Proportional to 5,170.55, 7,135.37 and 2,812.69

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Solution

The fourth proportional to 5,170.55, 7,135.37 and 2,812.69 is: 3,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.55 : 7,135.37 = 2,812.69 : x
  2. Step 2: Convert to fraction form
    5,170.55/7,135.37 = 2,812.69/x
  3. Step 3: Cross multiply
    5,170.55x = 7,135.37 × 2,812.69
  4. Step 4: Simplify right side
    5,170.55x = 20,069,551.94
  5. Step 5: Solve for x
    x = 20,069,551.94/5,170.55
  6. Step 6: Final answer
    x = 3,881.51

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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.