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Finding the Fourth Proportional to 5,809.50, 8,017.11 and 3,156.90

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Solution

The fourth proportional to 5,809.50, 8,017.11 and 3,156.90 is: 4,356.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,809.50 : 8,017.11 = 3,156.90 : x
  2. Step 2: Convert to fraction form
    5,809.50/8,017.11 = 3,156.90/x
  3. Step 3: Cross multiply
    5,809.50x = 8,017.11 × 3,156.90
  4. Step 4: Simplify right side
    5,809.50x = 25,309,214.56
  5. Step 5: Solve for x
    x = 25,309,214.56/5,809.50
  6. Step 6: Final answer
    x = 4,356.52

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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.