Home / 7,920.60-11,877.30-3,535.80

Finding the Fourth Proportional to 7,920.60, 11,877.30 and 3,535.80

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Solution

The fourth proportional to 7,920.60, 11,877.30 and 3,535.80 is: 5,302.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.60 : 11,877.30 = 3,535.80 : x
  2. Step 2: Convert to fraction form
    7,920.60/11,877.30 = 3,535.80/x
  3. Step 3: Cross multiply
    7,920.60x = 11,877.30 × 3,535.80
  4. Step 4: Simplify right side
    7,920.60x = 41,995,757.34
  5. Step 5: Solve for x
    x = 41,995,757.34/7,920.60
  6. Step 6: Final answer
    x = 5,302.09

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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.