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Finding the Fourth Proportional to 3,021.34, 4,531.18 and 829.55

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Solution

The fourth proportional to 3,021.34, 4,531.18 and 829.55 is: 1,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.34 : 4,531.18 = 829.55 : x
  2. Step 2: Convert to fraction form
    3,021.34/4,531.18 = 829.55/x
  3. Step 3: Cross multiply
    3,021.34x = 4,531.18 × 829.55
  4. Step 4: Simplify right side
    3,021.34x = 3,758,840.37
  5. Step 5: Solve for x
    x = 3,758,840.37/3,021.34
  6. Step 6: Final answer
    x = 1,244.10

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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.