Home / 3,021.21-4,531.95-830.16

Finding the Fourth Proportional to 3,021.21, 4,531.95 and 830.16

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Solution

The fourth proportional to 3,021.21, 4,531.95 and 830.16 is: 1,245.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.21 : 4,531.95 = 830.16 : x
  2. Step 2: Convert to fraction form
    3,021.21/4,531.95 = 830.16/x
  3. Step 3: Cross multiply
    3,021.21x = 4,531.95 × 830.16
  4. Step 4: Simplify right side
    3,021.21x = 3,762,243.61
  5. Step 5: Solve for x
    x = 3,762,243.61/3,021.21
  6. Step 6: Final answer
    x = 1,245.28

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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.