Home / 2,238.11-3,090.11-1,355.45

Finding the Fourth Proportional to 2,238.11, 3,090.11 and 1,355.45

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Solution

The fourth proportional to 2,238.11, 3,090.11 and 1,355.45 is: 1,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,238.11 : 3,090.11 = 1,355.45 : x
  2. Step 2: Convert to fraction form
    2,238.11/3,090.11 = 1,355.45/x
  3. Step 3: Cross multiply
    2,238.11x = 3,090.11 × 1,355.45
  4. Step 4: Simplify right side
    2,238.11x = 4,188,482.82
  5. Step 5: Solve for x
    x = 4,188,482.82/2,238.11
  6. Step 6: Final answer
    x = 1,871.44

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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.