Home / 6,909.88-10,355.08-5,179.72

Finding the Fourth Proportional to 6,909.88, 10,355.08 and 5,179.72

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Solution

The fourth proportional to 6,909.88, 10,355.08 and 5,179.72 is: 7,762.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909.88 : 10,355.08 = 5,179.72 : x
  2. Step 2: Convert to fraction form
    6,909.88/10,355.08 = 5,179.72/x
  3. Step 3: Cross multiply
    6,909.88x = 10,355.08 × 5,179.72
  4. Step 4: Simplify right side
    6,909.88x = 53,636,414.98
  5. Step 5: Solve for x
    x = 53,636,414.98/6,909.88
  6. Step 6: Final answer
    x = 7,762.28

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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.