Home / 3,861.49-5,791.50-1,885.13

Finding the Fourth Proportional to 3,861.49, 5,791.50 and 1,885.13

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Solution

The fourth proportional to 3,861.49, 5,791.50 and 1,885.13 is: 2,827.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.49 : 5,791.50 = 1,885.13 : x
  2. Step 2: Convert to fraction form
    3,861.49/5,791.50 = 1,885.13/x
  3. Step 3: Cross multiply
    3,861.49x = 5,791.50 × 1,885.13
  4. Step 4: Simplify right side
    3,861.49x = 10,917,730.40
  5. Step 5: Solve for x
    x = 10,917,730.40/3,861.49
  6. Step 6: Final answer
    x = 2,827.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.