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Finding the Fourth Proportional to 2,887.32, 3,986.03 and 2,438.99

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Solution

The fourth proportional to 2,887.32, 3,986.03 and 2,438.99 is: 3,367.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.32 : 3,986.03 = 2,438.99 : x
  2. Step 2: Convert to fraction form
    2,887.32/3,986.03 = 2,438.99/x
  3. Step 3: Cross multiply
    2,887.32x = 3,986.03 × 2,438.99
  4. Step 4: Simplify right side
    2,887.32x = 9,721,873.48
  5. Step 5: Solve for x
    x = 9,721,873.48/2,887.32
  6. Step 6: Final answer
    x = 3,367.09

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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.