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Finding the Fourth Proportional to 3,165.47, 4,367.88 and 1,986.92

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Solution

The fourth proportional to 3,165.47, 4,367.88 and 1,986.92 is: 2,741.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.47 : 4,367.88 = 1,986.92 : x
  2. Step 2: Convert to fraction form
    3,165.47/4,367.88 = 1,986.92/x
  3. Step 3: Cross multiply
    3,165.47x = 4,367.88 × 1,986.92
  4. Step 4: Simplify right side
    3,165.47x = 8,678,606.29
  5. Step 5: Solve for x
    x = 8,678,606.29/3,165.47
  6. Step 6: Final answer
    x = 2,741.65

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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.