Home / 1,268.80-1,903.20-1,037.95

Finding the Fourth Proportional to 1,268.80, 1,903.20 and 1,037.95

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Solution

The fourth proportional to 1,268.80, 1,903.20 and 1,037.95 is: 1,556.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.80 : 1,903.20 = 1,037.95 : x
  2. Step 2: Convert to fraction form
    1,268.80/1,903.20 = 1,037.95/x
  3. Step 3: Cross multiply
    1,268.80x = 1,903.20 × 1,037.95
  4. Step 4: Simplify right side
    1,268.80x = 1,975,426.44
  5. Step 5: Solve for x
    x = 1,975,426.44/1,268.80
  6. Step 6: Final answer
    x = 1,556.93

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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.