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Finding the Fourth Proportional to 3,129.62, 4,676.05 and 3,020.60

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Solution

The fourth proportional to 3,129.62, 4,676.05 and 3,020.60 is: 4,513.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.62 : 4,676.05 = 3,020.60 : x
  2. Step 2: Convert to fraction form
    3,129.62/4,676.05 = 3,020.60/x
  3. Step 3: Cross multiply
    3,129.62x = 4,676.05 × 3,020.60
  4. Step 4: Simplify right side
    3,129.62x = 14,124,476.63
  5. Step 5: Solve for x
    x = 14,124,476.63/3,129.62
  6. Step 6: Final answer
    x = 4,513.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.