Home / 3,221.43-4,445.65-1,962.55

Finding the Fourth Proportional to 3,221.43, 4,445.65 and 1,962.55

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Solution

The fourth proportional to 3,221.43, 4,445.65 and 1,962.55 is: 2,708.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.43 : 4,445.65 = 1,962.55 : x
  2. Step 2: Convert to fraction form
    3,221.43/4,445.65 = 1,962.55/x
  3. Step 3: Cross multiply
    3,221.43x = 4,445.65 × 1,962.55
  4. Step 4: Simplify right side
    3,221.43x = 8,724,810.41
  5. Step 5: Solve for x
    x = 8,724,810.41/3,221.43
  6. Step 6: Final answer
    x = 2,708.37

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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.