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Finding the Fourth Proportional to 2,760.01, 3,810.65 and 2,129.42

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Solution

The fourth proportional to 2,760.01, 3,810.65 and 2,129.42 is: 2,940.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.01 : 3,810.65 = 2,129.42 : x
  2. Step 2: Convert to fraction form
    2,760.01/3,810.65 = 2,129.42/x
  3. Step 3: Cross multiply
    2,760.01x = 3,810.65 × 2,129.42
  4. Step 4: Simplify right side
    2,760.01x = 8,114,473.20
  5. Step 5: Solve for x
    x = 8,114,473.20/2,760.01
  6. Step 6: Final answer
    x = 2,940.02

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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.