Home / 3,118.13-4,678.20-1,268.24

Finding the Fourth Proportional to 3,118.13, 4,678.20 and 1,268.24

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Solution

The fourth proportional to 3,118.13, 4,678.20 and 1,268.24 is: 1,902.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.13 : 4,678.20 = 1,268.24 : x
  2. Step 2: Convert to fraction form
    3,118.13/4,678.20 = 1,268.24/x
  3. Step 3: Cross multiply
    3,118.13x = 4,678.20 × 1,268.24
  4. Step 4: Simplify right side
    3,118.13x = 5,933,080.37
  5. Step 5: Solve for x
    x = 5,933,080.37/3,118.13
  6. Step 6: Final answer
    x = 1,902.77

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1.5x scale

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.