Home / 5,170.11-7,134.89-2,812.40

Finding the Fourth Proportional to 5,170.11, 7,134.89 and 2,812.40

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Solution

The fourth proportional to 5,170.11, 7,134.89 and 2,812.40 is: 3,881.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.11 : 7,134.89 = 2,812.40 : x
  2. Step 2: Convert to fraction form
    5,170.11/7,134.89 = 2,812.40/x
  3. Step 3: Cross multiply
    5,170.11x = 7,134.89 × 2,812.40
  4. Step 4: Simplify right side
    5,170.11x = 20,066,164.64
  5. Step 5: Solve for x
    x = 20,066,164.64/5,170.11
  6. Step 6: Final answer
    x = 3,881.19

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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.