Home / 2,040.58-2,815.99-1,109.08

Finding the Fourth Proportional to 2,040.58, 2,815.99 and 1,109.08

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Solution

The fourth proportional to 2,040.58, 2,815.99 and 1,109.08 is: 1,530.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.58 : 2,815.99 = 1,109.08 : x
  2. Step 2: Convert to fraction form
    2,040.58/2,815.99 = 1,109.08/x
  3. Step 3: Cross multiply
    2,040.58x = 2,815.99 × 1,109.08
  4. Step 4: Simplify right side
    2,040.58x = 3,123,158.19
  5. Step 5: Solve for x
    x = 3,123,158.19/2,040.58
  6. Step 6: Final answer
    x = 1,530.52

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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.