Home / 3,221.10-4,445.19-1,894.55

Finding the Fourth Proportional to 3,221.10, 4,445.19 and 1,894.55

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Solution

The fourth proportional to 3,221.10, 4,445.19 and 1,894.55 is: 2,614.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.10 : 4,445.19 = 1,894.55 : x
  2. Step 2: Convert to fraction form
    3,221.10/4,445.19 = 1,894.55/x
  3. Step 3: Cross multiply
    3,221.10x = 4,445.19 × 1,894.55
  4. Step 4: Simplify right side
    3,221.10x = 8,421,612.49
  5. Step 5: Solve for x
    x = 8,421,612.49/3,221.10
  6. Step 6: Final answer
    x = 2,614.51

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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.