Home / 7,622.88-11,433.98-3,178.72

Finding the Fourth Proportional to 7,622.88, 11,433.98 and 3,178.72

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Solution

The fourth proportional to 7,622.88, 11,433.98 and 3,178.72 is: 4,767.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,622.88 : 11,433.98 = 3,178.72 : x
  2. Step 2: Convert to fraction form
    7,622.88/11,433.98 = 3,178.72/x
  3. Step 3: Cross multiply
    7,622.88x = 11,433.98 × 3,178.72
  4. Step 4: Simplify right side
    7,622.88x = 36,345,400.27
  5. Step 5: Solve for x
    x = 36,345,400.27/7,622.88
  6. Step 6: Final answer
    x = 4,767.93

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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.