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Finding the Fourth Proportional to 3,732.99, 5,156.76 and 2,986.07

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Solution

The fourth proportional to 3,732.99, 5,156.76 and 2,986.07 is: 4,124.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,732.99 : 5,156.76 = 2,986.07 : x
  2. Step 2: Convert to fraction form
    3,732.99/5,156.76 = 2,986.07/x
  3. Step 3: Cross multiply
    3,732.99x = 5,156.76 × 2,986.07
  4. Step 4: Simplify right side
    3,732.99x = 15,398,431.75
  5. Step 5: Solve for x
    x = 15,398,431.75/3,732.99
  6. Step 6: Final answer
    x = 4,124.96

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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.