Home / 3,528.90-4,863.63-3,121.56

Finding the Fourth Proportional to 3,528.90, 4,863.63 and 3,121.56

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Solution

The fourth proportional to 3,528.90, 4,863.63 and 3,121.56 is: 4,302.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,528.90 : 4,863.63 = 3,121.56 : x
  2. Step 2: Convert to fraction form
    3,528.90/4,863.63 = 3,121.56/x
  3. Step 3: Cross multiply
    3,528.90x = 4,863.63 × 3,121.56
  4. Step 4: Simplify right side
    3,528.90x = 15,182,112.86
  5. Step 5: Solve for x
    x = 15,182,112.86/3,528.90
  6. Step 6: Final answer
    x = 4,302.22

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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.