Home / 3,818.66-5,269.82-2,140.45

Finding the Fourth Proportional to 3,818.66, 5,269.82 and 2,140.45

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Solution

The fourth proportional to 3,818.66, 5,269.82 and 2,140.45 is: 2,953.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.66 : 5,269.82 = 2,140.45 : x
  2. Step 2: Convert to fraction form
    3,818.66/5,269.82 = 2,140.45/x
  3. Step 3: Cross multiply
    3,818.66x = 5,269.82 × 2,140.45
  4. Step 4: Simplify right side
    3,818.66x = 11,279,764.50
  5. Step 5: Solve for x
    x = 11,279,764.50/3,818.66
  6. Step 6: Final answer
    x = 2,953.85

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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.