Home / 5,170.64-7,135.28-2,812.79

Finding the Fourth Proportional to 5,170.64, 7,135.28 and 2,812.79

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Solution

The fourth proportional to 5,170.64, 7,135.28 and 2,812.79 is: 3,881.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.64 : 7,135.28 = 2,812.79 : x
  2. Step 2: Convert to fraction form
    5,170.64/7,135.28 = 2,812.79/x
  3. Step 3: Cross multiply
    5,170.64x = 7,135.28 × 2,812.79
  4. Step 4: Simplify right side
    5,170.64x = 20,070,030.17
  5. Step 5: Solve for x
    x = 20,070,030.17/5,170.64
  6. Step 6: Final answer
    x = 3,881.54

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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.