Home / 5,665.45-7,818.42-3,147.79

Finding the Fourth Proportional to 5,665.45, 7,818.42 and 3,147.79

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Solution

The fourth proportional to 5,665.45, 7,818.42 and 3,147.79 is: 4,344.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,665.45 : 7,818.42 = 3,147.79 : x
  2. Step 2: Convert to fraction form
    5,665.45/7,818.42 = 3,147.79/x
  3. Step 3: Cross multiply
    5,665.45x = 7,818.42 × 3,147.79
  4. Step 4: Simplify right side
    5,665.45x = 24,610,744.29
  5. Step 5: Solve for x
    x = 24,610,744.29/5,665.45
  6. Step 6: Final answer
    x = 4,344.01

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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.