Home / 1,213.09-1,819.74-335.55

Finding the Fourth Proportional to 1,213.09, 1,819.74 and 335.55

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Solution

The fourth proportional to 1,213.09, 1,819.74 and 335.55 is: 503.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.09 : 1,819.74 = 335.55 : x
  2. Step 2: Convert to fraction form
    1,213.09/1,819.74 = 335.55/x
  3. Step 3: Cross multiply
    1,213.09x = 1,819.74 × 335.55
  4. Step 4: Simplify right side
    1,213.09x = 610,613.76
  5. Step 5: Solve for x
    x = 610,613.76/1,213.09
  6. Step 6: Final answer
    x = 503.36

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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.