Home / 3,861.60-5,328.66-2,182.98

Finding the Fourth Proportional to 3,861.60, 5,328.66 and 2,182.98

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Solution

The fourth proportional to 3,861.60, 5,328.66 and 2,182.98 is: 3,012.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.60 : 5,328.66 = 2,182.98 : x
  2. Step 2: Convert to fraction form
    3,861.60/5,328.66 = 2,182.98/x
  3. Step 3: Cross multiply
    3,861.60x = 5,328.66 × 2,182.98
  4. Step 4: Simplify right side
    3,861.60x = 11,632,358.21
  5. Step 5: Solve for x
    x = 11,632,358.21/3,861.60
  6. Step 6: Final answer
    x = 3,012.32

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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.