Home / 7,200.30-9,936.18-4,405.80

Finding the Fourth Proportional to 7,200.30, 9,936.18 and 4,405.80

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Solution

The fourth proportional to 7,200.30, 9,936.18 and 4,405.80 is: 6,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.30 : 9,936.18 = 4,405.80 : x
  2. Step 2: Convert to fraction form
    7,200.30/9,936.18 = 4,405.80/x
  3. Step 3: Cross multiply
    7,200.30x = 9,936.18 × 4,405.80
  4. Step 4: Simplify right side
    7,200.30x = 43,776,821.84
  5. Step 5: Solve for x
    x = 43,776,821.84/7,200.30
  6. Step 6: Final answer
    x = 6,079.86

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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.