Home / 5,665.85-7,818.82-3,113.64

Finding the Fourth Proportional to 5,665.85, 7,818.82 and 3,113.64

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Solution

The fourth proportional to 5,665.85, 7,818.82 and 3,113.64 is: 4,296.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,665.85 : 7,818.82 = 3,113.64 : x
  2. Step 2: Convert to fraction form
    5,665.85/7,818.82 = 3,113.64/x
  3. Step 3: Cross multiply
    5,665.85x = 7,818.82 × 3,113.64
  4. Step 4: Simplify right side
    5,665.85x = 24,344,990.70
  5. Step 5: Solve for x
    x = 24,344,990.70/5,665.85
  6. Step 6: Final answer
    x = 4,296.79

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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.