Home / 5,160.12-7,121.16-2,922.09

Finding the Fourth Proportional to 5,160.12, 7,121.16 and 2,922.09

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Solution

The fourth proportional to 5,160.12, 7,121.16 and 2,922.09 is: 4,032.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.12 : 7,121.16 = 2,922.09 : x
  2. Step 2: Convert to fraction form
    5,160.12/7,121.16 = 2,922.09/x
  3. Step 3: Cross multiply
    5,160.12x = 7,121.16 × 2,922.09
  4. Step 4: Simplify right side
    5,160.12x = 20,808,670.42
  5. Step 5: Solve for x
    x = 20,808,670.42/5,160.12
  6. Step 6: Final answer
    x = 4,032.59

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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.