Home / 3,968.16-5,476.31-2,289.78

Finding the Fourth Proportional to 3,968.16, 5,476.31 and 2,289.78

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Solution

The fourth proportional to 3,968.16, 5,476.31 and 2,289.78 is: 3,160.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.16 : 5,476.31 = 2,289.78 : x
  2. Step 2: Convert to fraction form
    3,968.16/5,476.31 = 2,289.78/x
  3. Step 3: Cross multiply
    3,968.16x = 5,476.31 × 2,289.78
  4. Step 4: Simplify right side
    3,968.16x = 12,539,533.66
  5. Step 5: Solve for x
    x = 12,539,533.66/3,968.16
  6. Step 6: Final answer
    x = 3,160.04

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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.