Home / 2,902.20-4,001.26-1,969.08

Finding the Fourth Proportional to 2,902.20, 4,001.26 and 1,969.08

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Solution

The fourth proportional to 2,902.20, 4,001.26 and 1,969.08 is: 2,714.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,902.20 : 4,001.26 = 1,969.08 : x
  2. Step 2: Convert to fraction form
    2,902.20/4,001.26 = 1,969.08/x
  3. Step 3: Cross multiply
    2,902.20x = 4,001.26 × 1,969.08
  4. Step 4: Simplify right side
    2,902.20x = 7,878,801.04
  5. Step 5: Solve for x
    x = 7,878,801.04/2,902.20
  6. Step 6: Final answer
    x = 2,714.77

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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.