Home / 7,900.02-11,839.79-3,214.59

Finding the Fourth Proportional to 7,900.02, 11,839.79 and 3,214.59

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Solution

The fourth proportional to 7,900.02, 11,839.79 and 3,214.59 is: 4,817.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.02 : 11,839.79 = 3,214.59 : x
  2. Step 2: Convert to fraction form
    7,900.02/11,839.79 = 3,214.59/x
  3. Step 3: Cross multiply
    7,900.02x = 11,839.79 × 3,214.59
  4. Step 4: Simplify right side
    7,900.02x = 38,060,054.46
  5. Step 5: Solve for x
    x = 38,060,054.46/7,900.02
  6. Step 6: Final answer
    x = 4,817.72

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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.