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Finding the Fourth Proportional to 5,009.60, 6,906.12 and 3,888.56

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Solution

The fourth proportional to 5,009.60, 6,906.12 and 3,888.56 is: 5,360.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.60 : 6,906.12 = 3,888.56 : x
  2. Step 2: Convert to fraction form
    5,009.60/6,906.12 = 3,888.56/x
  3. Step 3: Cross multiply
    5,009.60x = 6,906.12 × 3,888.56
  4. Step 4: Simplify right side
    5,009.60x = 26,854,861.99
  5. Step 5: Solve for x
    x = 26,854,861.99/5,009.60
  6. Step 6: Final answer
    x = 5,360.68

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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.