Home / 5,170.17-7,134.80-2,812.31

Finding the Fourth Proportional to 5,170.17, 7,134.80 and 2,812.31

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Solution

The fourth proportional to 5,170.17, 7,134.80 and 2,812.31 is: 3,880.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.17 : 7,134.80 = 2,812.31 : x
  2. Step 2: Convert to fraction form
    5,170.17/7,134.80 = 2,812.31/x
  3. Step 3: Cross multiply
    5,170.17x = 7,134.80 × 2,812.31
  4. Step 4: Simplify right side
    5,170.17x = 20,065,269.39
  5. Step 5: Solve for x
    x = 20,065,269.39/5,170.17
  6. Step 6: Final answer
    x = 3,880.97

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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.