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Finding the Fourth Proportional to 2,122.88, 2,935.04 and 2,031.08

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Solution

The fourth proportional to 2,122.88, 2,935.04 and 2,031.08 is: 2,808.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.88 : 2,935.04 = 2,031.08 : x
  2. Step 2: Convert to fraction form
    2,122.88/2,935.04 = 2,031.08/x
  3. Step 3: Cross multiply
    2,122.88x = 2,935.04 × 2,031.08
  4. Step 4: Simplify right side
    2,122.88x = 5,961,276.21
  5. Step 5: Solve for x
    x = 5,961,276.21/2,122.88
  6. Step 6: Final answer
    x = 2,808.11

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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.