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Finding the Fourth Proportional to 1,343.34, 1,854.12 and 996.66

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Solution

The fourth proportional to 1,343.34, 1,854.12 and 996.66 is: 1,375.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.34 : 1,854.12 = 996.66 : x
  2. Step 2: Convert to fraction form
    1,343.34/1,854.12 = 996.66/x
  3. Step 3: Cross multiply
    1,343.34x = 1,854.12 × 996.66
  4. Step 4: Simplify right side
    1,343.34x = 1,847,927.24
  5. Step 5: Solve for x
    x = 1,847,927.24/1,343.34
  6. Step 6: Final answer
    x = 1,375.62

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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.