Home / 1,902.12-2,625.40-1,105.28

Finding the Fourth Proportional to 1,902.12, 2,625.40 and 1,105.28

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Solution

The fourth proportional to 1,902.12, 2,625.40 and 1,105.28 is: 1,525.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.12 : 2,625.40 = 1,105.28 : x
  2. Step 2: Convert to fraction form
    1,902.12/2,625.40 = 1,105.28/x
  3. Step 3: Cross multiply
    1,902.12x = 2,625.40 × 1,105.28
  4. Step 4: Simplify right side
    1,902.12x = 2,901,802.11
  5. Step 5: Solve for x
    x = 2,901,802.11/1,902.12
  6. Step 6: Final answer
    x = 1,525.56

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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.