Home / 1,909.10-2,861.36-932.96

Finding the Fourth Proportional to 1,909.10, 2,861.36 and 932.96

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Solution

The fourth proportional to 1,909.10, 2,861.36 and 932.96 is: 1,398.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.10 : 2,861.36 = 932.96 : x
  2. Step 2: Convert to fraction form
    1,909.10/2,861.36 = 932.96/x
  3. Step 3: Cross multiply
    1,909.10x = 2,861.36 × 932.96
  4. Step 4: Simplify right side
    1,909.10x = 2,669,534.43
  5. Step 5: Solve for x
    x = 2,669,534.43/1,909.10
  6. Step 6: Final answer
    x = 1,398.32

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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.