Home / 1,213.00-1,819.51-433.04

Finding the Fourth Proportional to 1,213.00, 1,819.51 and 433.04

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Solution

The fourth proportional to 1,213.00, 1,819.51 and 433.04 is: 649.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.00 : 1,819.51 = 433.04 : x
  2. Step 2: Convert to fraction form
    1,213.00/1,819.51 = 433.04/x
  3. Step 3: Cross multiply
    1,213.00x = 1,819.51 × 433.04
  4. Step 4: Simplify right side
    1,213.00x = 787,910.43
  5. Step 5: Solve for x
    x = 787,910.43/1,213.00
  6. Step 6: Final answer
    x = 649.56

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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.