Home / 7,200-9,936.45-4,056.21

Finding the Fourth Proportional to 7,200, 9,936.45 and 4,056.21

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Solution

The fourth proportional to 7,200, 9,936.45 and 4,056.21 is: 5,597.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200 : 9,936.45 = 4,056.21 : x
  2. Step 2: Convert to fraction form
    7,200/9,936.45 = 4,056.21/x
  3. Step 3: Cross multiply
    7,200x = 9,936.45 × 4,056.21
  4. Step 4: Simplify right side
    7,200x = 40,304,327.85
  5. Step 5: Solve for x
    x = 40,304,327.85/7,200
  6. Step 6: Final answer
    x = 5,597.82

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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.