Home / 3,640.13-5,459.79-1,299.63

Finding the Fourth Proportional to 3,640.13, 5,459.79 and 1,299.63

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Solution

The fourth proportional to 3,640.13, 5,459.79 and 1,299.63 is: 1,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.13 : 5,459.79 = 1,299.63 : x
  2. Step 2: Convert to fraction form
    3,640.13/5,459.79 = 1,299.63/x
  3. Step 3: Cross multiply
    3,640.13x = 5,459.79 × 1,299.63
  4. Step 4: Simplify right side
    3,640.13x = 7,095,706.88
  5. Step 5: Solve for x
    x = 7,095,706.88/3,640.13
  6. Step 6: Final answer
    x = 1,949.30

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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.