Home / 2,147.04-3,220.56-1,421.22

Finding the Fourth Proportional to 2,147.04, 3,220.56 and 1,421.22

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Solution

The fourth proportional to 2,147.04, 3,220.56 and 1,421.22 is: 2,131.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.04 : 3,220.56 = 1,421.22 : x
  2. Step 2: Convert to fraction form
    2,147.04/3,220.56 = 1,421.22/x
  3. Step 3: Cross multiply
    2,147.04x = 3,220.56 × 1,421.22
  4. Step 4: Simplify right side
    2,147.04x = 4,577,124.28
  5. Step 5: Solve for x
    x = 4,577,124.28/2,147.04
  6. Step 6: Final answer
    x = 2,131.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.