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Finding the Fourth Proportional to 2,867.89, 3,957.90 and 1,608.94

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Solution

The fourth proportional to 2,867.89, 3,957.90 and 1,608.94 is: 2,220.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.89 : 3,957.90 = 1,608.94 : x
  2. Step 2: Convert to fraction form
    2,867.89/3,957.90 = 1,608.94/x
  3. Step 3: Cross multiply
    2,867.89x = 3,957.90 × 1,608.94
  4. Step 4: Simplify right side
    2,867.89x = 6,368,023.63
  5. Step 5: Solve for x
    x = 6,368,023.63/2,867.89
  6. Step 6: Final answer
    x = 2,220.46

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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.