Home / 1,211.34-1,805.66-1,133.43

Finding the Fourth Proportional to 1,211.34, 1,805.66 and 1,133.43

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Solution

The fourth proportional to 1,211.34, 1,805.66 and 1,133.43 is: 1,689.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.34 : 1,805.66 = 1,133.43 : x
  2. Step 2: Convert to fraction form
    1,211.34/1,805.66 = 1,133.43/x
  3. Step 3: Cross multiply
    1,211.34x = 1,805.66 × 1,133.43
  4. Step 4: Simplify right side
    1,211.34x = 2,046,583.55
  5. Step 5: Solve for x
    x = 2,046,583.55/1,211.34
  6. Step 6: Final answer
    x = 1,689.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.