Home / 7,813.20-11,723.52-3,920.34

Finding the Fourth Proportional to 7,813.20, 11,723.52 and 3,920.34

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Solution

The fourth proportional to 7,813.20, 11,723.52 and 3,920.34 is: 5,882.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.20 : 11,723.52 = 3,920.34 : x
  2. Step 2: Convert to fraction form
    7,813.20/11,723.52 = 3,920.34/x
  3. Step 3: Cross multiply
    7,813.20x = 11,723.52 × 3,920.34
  4. Step 4: Simplify right side
    7,813.20x = 45,960,184.40
  5. Step 5: Solve for x
    x = 45,960,184.40/7,813.20
  6. Step 6: Final answer
    x = 5,882.38

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1.5x scale

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.