Home / 3,491.51-5,236.65-1,299.78

Finding the Fourth Proportional to 3,491.51, 5,236.65 and 1,299.78

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Solution

The fourth proportional to 3,491.51, 5,236.65 and 1,299.78 is: 1,949.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.51 : 5,236.65 = 1,299.78 : x
  2. Step 2: Convert to fraction form
    3,491.51/5,236.65 = 1,299.78/x
  3. Step 3: Cross multiply
    3,491.51x = 5,236.65 × 1,299.78
  4. Step 4: Simplify right side
    3,491.51x = 6,806,492.94
  5. Step 5: Solve for x
    x = 6,806,492.94/3,491.51
  6. Step 6: Final answer
    x = 1,949.44

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Double scale
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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.