Home / 5,170.32-7,135.20-2,812.32

Finding the Fourth Proportional to 5,170.32, 7,135.20 and 2,812.32

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Solution

The fourth proportional to 5,170.32, 7,135.20 and 2,812.32 is: 3,881.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.32 : 7,135.20 = 2,812.32 : x
  2. Step 2: Convert to fraction form
    5,170.32/7,135.20 = 2,812.32/x
  3. Step 3: Cross multiply
    5,170.32x = 7,135.20 × 2,812.32
  4. Step 4: Simplify right side
    5,170.32x = 20,066,465.66
  5. Step 5: Solve for x
    x = 20,066,465.66/5,170.32
  6. Step 6: Final answer
    x = 3,881.09

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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.