Home / 1,902.11-2,624.41-1,115.73

Finding the Fourth Proportional to 1,902.11, 2,624.41 and 1,115.73

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Solution

The fourth proportional to 1,902.11, 2,624.41 and 1,115.73 is: 1,539.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.11 : 2,624.41 = 1,115.73 : x
  2. Step 2: Convert to fraction form
    1,902.11/2,624.41 = 1,115.73/x
  3. Step 3: Cross multiply
    1,902.11x = 2,624.41 × 1,115.73
  4. Step 4: Simplify right side
    1,902.11x = 2,928,130.18
  5. Step 5: Solve for x
    x = 2,928,130.18/1,902.11
  6. Step 6: Final answer
    x = 1,539.42

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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.