Home / 1,855.38-2,560.31-1,109.35

Finding the Fourth Proportional to 1,855.38, 2,560.31 and 1,109.35

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Solution

The fourth proportional to 1,855.38, 2,560.31 and 1,109.35 is: 1,530.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.38 : 2,560.31 = 1,109.35 : x
  2. Step 2: Convert to fraction form
    1,855.38/2,560.31 = 1,109.35/x
  3. Step 3: Cross multiply
    1,855.38x = 2,560.31 × 1,109.35
  4. Step 4: Simplify right side
    1,855.38x = 2,840,267.95
  5. Step 5: Solve for x
    x = 2,840,267.95/1,855.38
  6. Step 6: Final answer
    x = 1,530.83

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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.