Home / 1,349.30-1,861.62-824.96

Finding the Fourth Proportional to 1,349.30, 1,861.62 and 824.96

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Solution

The fourth proportional to 1,349.30, 1,861.62 and 824.96 is: 1,138.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.30 : 1,861.62 = 824.96 : x
  2. Step 2: Convert to fraction form
    1,349.30/1,861.62 = 824.96/x
  3. Step 3: Cross multiply
    1,349.30x = 1,861.62 × 824.96
  4. Step 4: Simplify right side
    1,349.30x = 1,535,762.04
  5. Step 5: Solve for x
    x = 1,535,762.04/1,349.30
  6. Step 6: Final answer
    x = 1,138.19

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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.