Home / 1,789.20-2,468.40-1,369.11

Finding the Fourth Proportional to 1,789.20, 2,468.40 and 1,369.11

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Solution

The fourth proportional to 1,789.20, 2,468.40 and 1,369.11 is: 1,888.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.20 : 2,468.40 = 1,369.11 : x
  2. Step 2: Convert to fraction form
    1,789.20/2,468.40 = 1,369.11/x
  3. Step 3: Cross multiply
    1,789.20x = 2,468.40 × 1,369.11
  4. Step 4: Simplify right side
    1,789.20x = 3,379,511.12
  5. Step 5: Solve for x
    x = 3,379,511.12/1,789.20
  6. Step 6: Final answer
    x = 1,888.84

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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.