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Finding the Fourth Proportional to 3,402.65, 4,695.97 and 1,986.23

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Solution

The fourth proportional to 3,402.65, 4,695.97 and 1,986.23 is: 2,741.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,402.65 : 4,695.97 = 1,986.23 : x
  2. Step 2: Convert to fraction form
    3,402.65/4,695.97 = 1,986.23/x
  3. Step 3: Cross multiply
    3,402.65x = 4,695.97 × 1,986.23
  4. Step 4: Simplify right side
    3,402.65x = 9,327,276.49
  5. Step 5: Solve for x
    x = 9,327,276.49/3,402.65
  6. Step 6: Final answer
    x = 2,741.18

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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.