Home / 2,780.16-3,840.56-2,224.32

Finding the Fourth Proportional to 2,780.16, 3,840.56 and 2,224.32

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Solution

The fourth proportional to 2,780.16, 3,840.56 and 2,224.32 is: 3,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.16 : 3,840.56 = 2,224.32 : x
  2. Step 2: Convert to fraction form
    2,780.16/3,840.56 = 2,224.32/x
  3. Step 3: Cross multiply
    2,780.16x = 3,840.56 × 2,224.32
  4. Step 4: Simplify right side
    2,780.16x = 8,542,634.42
  5. Step 5: Solve for x
    x = 8,542,634.42/2,780.16
  6. Step 6: Final answer
    x = 3,072.71

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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.