Home / 3,166.72-4,369.61-1,988.17

Finding the Fourth Proportional to 3,166.72, 4,369.61 and 1,988.17

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Solution

The fourth proportional to 3,166.72, 4,369.61 and 1,988.17 is: 2,743.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,166.72 : 4,369.61 = 1,988.17 : x
  2. Step 2: Convert to fraction form
    3,166.72/4,369.61 = 1,988.17/x
  3. Step 3: Cross multiply
    3,166.72x = 4,369.61 × 1,988.17
  4. Step 4: Simplify right side
    3,166.72x = 8,687,495.72
  5. Step 5: Solve for x
    x = 8,687,495.72/3,166.72
  6. Step 6: Final answer
    x = 2,743.38

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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.