Home / 7,923.60-11,881.80-3,538.80

Finding the Fourth Proportional to 7,923.60, 11,881.80 and 3,538.80

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Solution

The fourth proportional to 7,923.60, 11,881.80 and 3,538.80 is: 5,306.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.60 : 11,881.80 = 3,538.80 : x
  2. Step 2: Convert to fraction form
    7,923.60/11,881.80 = 3,538.80/x
  3. Step 3: Cross multiply
    7,923.60x = 11,881.80 × 3,538.80
  4. Step 4: Simplify right side
    7,923.60x = 42,047,313.84
  5. Step 5: Solve for x
    x = 42,047,313.84/7,923.60
  6. Step 6: Final answer
    x = 5,306.59

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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.