Home / 1,392.26-2,075.60-1,326.65

Finding the Fourth Proportional to 1,392.26, 2,075.60 and 1,326.65

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Solution

The fourth proportional to 1,392.26, 2,075.60 and 1,326.65 is: 1,977.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.26 : 2,075.60 = 1,326.65 : x
  2. Step 2: Convert to fraction form
    1,392.26/2,075.60 = 1,326.65/x
  3. Step 3: Cross multiply
    1,392.26x = 2,075.60 × 1,326.65
  4. Step 4: Simplify right side
    1,392.26x = 2,753,601.46
  5. Step 5: Solve for x
    x = 2,753,601.46/1,392.26
  6. Step 6: Final answer
    x = 1,977.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.