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Finding the Fourth Proportional to 2,705.76, 3,733.08 and 2,136.80

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Solution

The fourth proportional to 2,705.76, 3,733.08 and 2,136.80 is: 2,948.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.76 : 3,733.08 = 2,136.80 : x
  2. Step 2: Convert to fraction form
    2,705.76/3,733.08 = 2,136.80/x
  3. Step 3: Cross multiply
    2,705.76x = 3,733.08 × 2,136.80
  4. Step 4: Simplify right side
    2,705.76x = 7,976,826.68
  5. Step 5: Solve for x
    x = 7,976,826.68/2,705.76
  6. Step 6: Final answer
    x = 2,948.09

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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.