Home / 7,808.30-11,712.45-3,425.41

Finding the Fourth Proportional to 7,808.30, 11,712.45 and 3,425.41

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Solution

The fourth proportional to 7,808.30, 11,712.45 and 3,425.41 is: 5,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.30 : 11,712.45 = 3,425.41 : x
  2. Step 2: Convert to fraction form
    7,808.30/11,712.45 = 3,425.41/x
  3. Step 3: Cross multiply
    7,808.30x = 11,712.45 × 3,425.41
  4. Step 4: Simplify right side
    7,808.30x = 40,119,984.51
  5. Step 5: Solve for x
    x = 40,119,984.51/7,808.30
  6. Step 6: Final answer
    x = 5,138.12

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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.