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Finding the Fourth Proportional to 2,246.76, 3,369.36 and 860.49

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Solution

The fourth proportional to 2,246.76, 3,369.36 and 860.49 is: 1,290.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,246.76 : 3,369.36 = 860.49 : x
  2. Step 2: Convert to fraction form
    2,246.76/3,369.36 = 860.49/x
  3. Step 3: Cross multiply
    2,246.76x = 3,369.36 × 860.49
  4. Step 4: Simplify right side
    2,246.76x = 2,899,292.16
  5. Step 5: Solve for x
    x = 2,899,292.16/2,246.76
  6. Step 6: Final answer
    x = 1,290.43

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Find fourth proportional to 2,247.76, 3,370.86 and 861.49
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1.5x scale

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.