Home / 1,340.95-2,009.23-1,289.69

Finding the Fourth Proportional to 1,340.95, 2,009.23 and 1,289.69

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Solution

The fourth proportional to 1,340.95, 2,009.23 and 1,289.69 is: 1,932.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.95 : 2,009.23 = 1,289.69 : x
  2. Step 2: Convert to fraction form
    1,340.95/2,009.23 = 1,289.69/x
  3. Step 3: Cross multiply
    1,340.95x = 2,009.23 × 1,289.69
  4. Step 4: Simplify right side
    1,340.95x = 2,591,295.65
  5. Step 5: Solve for x
    x = 2,591,295.65/1,340.95
  6. Step 6: Final answer
    x = 1,932.43

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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.