Home / 2,178.81-3,268.35-946.31

Finding the Fourth Proportional to 2,178.81, 3,268.35 and 946.31

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Solution

The fourth proportional to 2,178.81, 3,268.35 and 946.31 is: 1,419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.81 : 3,268.35 = 946.31 : x
  2. Step 2: Convert to fraction form
    2,178.81/3,268.35 = 946.31/x
  3. Step 3: Cross multiply
    2,178.81x = 3,268.35 × 946.31
  4. Step 4: Simplify right side
    2,178.81x = 3,092,855.95
  5. Step 5: Solve for x
    x = 3,092,855.95/2,178.81
  6. Step 6: Final answer
    x = 1,419.52

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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.