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Finding the Fourth Proportional to 5,171.86, 7,135.99 and 2,933.20

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Solution

The fourth proportional to 5,171.86, 7,135.99 and 2,933.20 is: 4,047.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.86 : 7,135.99 = 2,933.20 : x
  2. Step 2: Convert to fraction form
    5,171.86/7,135.99 = 2,933.20/x
  3. Step 3: Cross multiply
    5,171.86x = 7,135.99 × 2,933.20
  4. Step 4: Simplify right side
    5,171.86x = 20,931,285.87
  5. Step 5: Solve for x
    x = 20,931,285.87/5,171.86
  6. Step 6: Final answer
    x = 4,047.15

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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.