Home / 2,015.28-2,778.84-1,934.64

Finding the Fourth Proportional to 2,015.28, 2,778.84 and 1,934.64

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Solution

The fourth proportional to 2,015.28, 2,778.84 and 1,934.64 is: 2,667.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.28 : 2,778.84 = 1,934.64 : x
  2. Step 2: Convert to fraction form
    2,015.28/2,778.84 = 1,934.64/x
  3. Step 3: Cross multiply
    2,015.28x = 2,778.84 × 1,934.64
  4. Step 4: Simplify right side
    2,015.28x = 5,376,055.02
  5. Step 5: Solve for x
    x = 5,376,055.02/2,015.28
  6. Step 6: Final answer
    x = 2,667.65

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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.