Home / 10,505.32-15,759.85-3,485.75

Finding the Fourth Proportional to 10,505.32, 15,759.85 and 3,485.75

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Solution

The fourth proportional to 10,505.32, 15,759.85 and 3,485.75 is: 5,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.32 : 15,759.85 = 3,485.75 : x
  2. Step 2: Convert to fraction form
    10,505.32/15,759.85 = 3,485.75/x
  3. Step 3: Cross multiply
    10,505.32x = 15,759.85 × 3,485.75
  4. Step 4: Simplify right side
    10,505.32x = 54,934,898.27
  5. Step 5: Solve for x
    x = 54,934,898.27/10,505.32
  6. Step 6: Final answer
    x = 5,229.25

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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.