Home / 1,268.80-1,903.20-1,159.46

Finding the Fourth Proportional to 1,268.80, 1,903.20 and 1,159.46

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Solution

The fourth proportional to 1,268.80, 1,903.20 and 1,159.46 is: 1,739.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.80 : 1,903.20 = 1,159.46 : x
  2. Step 2: Convert to fraction form
    1,268.80/1,903.20 = 1,159.46/x
  3. Step 3: Cross multiply
    1,268.80x = 1,903.20 × 1,159.46
  4. Step 4: Simplify right side
    1,268.80x = 2,206,684.27
  5. Step 5: Solve for x
    x = 2,206,684.27/1,268.80
  6. Step 6: Final answer
    x = 1,739.19

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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.