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Finding the Fourth Proportional to 2,867.99, 3,957.99 and 1,609.15

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Solution

The fourth proportional to 2,867.99, 3,957.99 and 1,609.15 is: 2,220.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.99 : 3,957.99 = 1,609.15 : x
  2. Step 2: Convert to fraction form
    2,867.99/3,957.99 = 1,609.15/x
  3. Step 3: Cross multiply
    2,867.99x = 3,957.99 × 1,609.15
  4. Step 4: Simplify right side
    2,867.99x = 6,368,979.82
  5. Step 5: Solve for x
    x = 6,368,979.82/2,867.99
  6. Step 6: Final answer
    x = 2,220.72

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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.