Home / 1,330.32-1,996.70-1,021.18

Finding the Fourth Proportional to 1,330.32, 1,996.70 and 1,021.18

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Solution

The fourth proportional to 1,330.32, 1,996.70 and 1,021.18 is: 1,532.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.32 : 1,996.70 = 1,021.18 : x
  2. Step 2: Convert to fraction form
    1,330.32/1,996.70 = 1,021.18/x
  3. Step 3: Cross multiply
    1,330.32x = 1,996.70 × 1,021.18
  4. Step 4: Simplify right side
    1,330.32x = 2,038,990.11
  5. Step 5: Solve for x
    x = 2,038,990.11/1,330.32
  6. Step 6: Final answer
    x = 1,532.71

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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.