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Finding the Fourth Proportional to 5,818.79, 8,731.78 and 2,308.21

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Solution

The fourth proportional to 5,818.79, 8,731.78 and 2,308.21 is: 3,463.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,818.79 : 8,731.78 = 2,308.21 : x
  2. Step 2: Convert to fraction form
    5,818.79/8,731.78 = 2,308.21/x
  3. Step 3: Cross multiply
    5,818.79x = 8,731.78 × 2,308.21
  4. Step 4: Simplify right side
    5,818.79x = 20,154,754.31
  5. Step 5: Solve for x
    x = 20,154,754.31/5,818.79
  6. Step 6: Final answer
    x = 3,463.73

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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.