Home / 7,685.28-11,529.54-2,490.75

Finding the Fourth Proportional to 7,685.28, 11,529.54 and 2,490.75

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Solution

The fourth proportional to 7,685.28, 11,529.54 and 2,490.75 is: 3,736.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.28 : 11,529.54 = 2,490.75 : x
  2. Step 2: Convert to fraction form
    7,685.28/11,529.54 = 2,490.75/x
  3. Step 3: Cross multiply
    7,685.28x = 11,529.54 × 2,490.75
  4. Step 4: Simplify right side
    7,685.28x = 28,717,201.76
  5. Step 5: Solve for x
    x = 28,717,201.76/7,685.28
  6. Step 6: Final answer
    x = 3,736.65

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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.