Home / 2,286.76-3,155.79-1,403.05

Finding the Fourth Proportional to 2,286.76, 3,155.79 and 1,403.05

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Solution

The fourth proportional to 2,286.76, 3,155.79 and 1,403.05 is: 1,936.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.76 : 3,155.79 = 1,403.05 : x
  2. Step 2: Convert to fraction form
    2,286.76/3,155.79 = 1,403.05/x
  3. Step 3: Cross multiply
    2,286.76x = 3,155.79 × 1,403.05
  4. Step 4: Simplify right side
    2,286.76x = 4,427,731.16
  5. Step 5: Solve for x
    x = 4,427,731.16/2,286.76
  6. Step 6: Final answer
    x = 1,936.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.