Home / 1,330.96-1,835.25-911.38

Finding the Fourth Proportional to 1,330.96, 1,835.25 and 911.38

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Solution

The fourth proportional to 1,330.96, 1,835.25 and 911.38 is: 1,256.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.96 : 1,835.25 = 911.38 : x
  2. Step 2: Convert to fraction form
    1,330.96/1,835.25 = 911.38/x
  3. Step 3: Cross multiply
    1,330.96x = 1,835.25 × 911.38
  4. Step 4: Simplify right side
    1,330.96x = 1,672,610.15
  5. Step 5: Solve for x
    x = 1,672,610.15/1,330.96
  6. Step 6: Final answer
    x = 1,256.69

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Double scale
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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.