Home / 1,902.21-2,623.86-1,155.44

Finding the Fourth Proportional to 1,902.21, 2,623.86 and 1,155.44

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Solution

The fourth proportional to 1,902.21, 2,623.86 and 1,155.44 is: 1,593.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.21 : 2,623.86 = 1,155.44 : x
  2. Step 2: Convert to fraction form
    1,902.21/2,623.86 = 1,155.44/x
  3. Step 3: Cross multiply
    1,902.21x = 2,623.86 × 1,155.44
  4. Step 4: Simplify right side
    1,902.21x = 3,031,699.68
  5. Step 5: Solve for x
    x = 3,031,699.68/1,902.21
  6. Step 6: Final answer
    x = 1,593.78

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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.