Home / 7,221.80-9,962.10-4,236.20

Finding the Fourth Proportional to 7,221.80, 9,962.10 and 4,236.20

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Solution

The fourth proportional to 7,221.80, 9,962.10 and 4,236.20 is: 5,843.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.80 : 9,962.10 = 4,236.20 : x
  2. Step 2: Convert to fraction form
    7,221.80/9,962.10 = 4,236.20/x
  3. Step 3: Cross multiply
    7,221.80x = 9,962.10 × 4,236.20
  4. Step 4: Simplify right side
    7,221.80x = 42,201,448.02
  5. Step 5: Solve for x
    x = 42,201,448.02/7,221.80
  6. Step 6: Final answer
    x = 5,843.62

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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.