Home / 3,878.02-5,349.96-2,305.78

Finding the Fourth Proportional to 3,878.02, 5,349.96 and 2,305.78

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Solution

The fourth proportional to 3,878.02, 5,349.96 and 2,305.78 is: 3,180.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.02 : 5,349.96 = 2,305.78 : x
  2. Step 2: Convert to fraction form
    3,878.02/5,349.96 = 2,305.78/x
  3. Step 3: Cross multiply
    3,878.02x = 5,349.96 × 2,305.78
  4. Step 4: Simplify right side
    3,878.02x = 12,335,830.77
  5. Step 5: Solve for x
    x = 12,335,830.77/3,878.02
  6. Step 6: Final answer
    x = 3,180.96

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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.