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Finding the Fourth Proportional to 3,512.71, 4,848.35 and 2,021.49

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Solution

The fourth proportional to 3,512.71, 4,848.35 and 2,021.49 is: 2,790.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.71 : 4,848.35 = 2,021.49 : x
  2. Step 2: Convert to fraction form
    3,512.71/4,848.35 = 2,021.49/x
  3. Step 3: Cross multiply
    3,512.71x = 4,848.35 × 2,021.49
  4. Step 4: Simplify right side
    3,512.71x = 9,800,880.93
  5. Step 5: Solve for x
    x = 9,800,880.93/3,512.71
  6. Step 6: Final answer
    x = 2,790.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.