Home / 2,189.08-3,285.78-1,842.40

Finding the Fourth Proportional to 2,189.08, 3,285.78 and 1,842.40

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Solution

The fourth proportional to 2,189.08, 3,285.78 and 1,842.40 is: 2,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.08 : 3,285.78 = 1,842.40 : x
  2. Step 2: Convert to fraction form
    2,189.08/3,285.78 = 1,842.40/x
  3. Step 3: Cross multiply
    2,189.08x = 3,285.78 × 1,842.40
  4. Step 4: Simplify right side
    2,189.08x = 6,053,721.07
  5. Step 5: Solve for x
    x = 6,053,721.07/2,189.08
  6. Step 6: Final answer
    x = 2,765.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.