Home / 7,907.45-10,911.99-4,550.78

Finding the Fourth Proportional to 7,907.45, 10,911.99 and 4,550.78

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Solution

The fourth proportional to 7,907.45, 10,911.99 and 4,550.78 is: 6,279.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.45 : 10,911.99 = 4,550.78 : x
  2. Step 2: Convert to fraction form
    7,907.45/10,911.99 = 4,550.78/x
  3. Step 3: Cross multiply
    7,907.45x = 10,911.99 × 4,550.78
  4. Step 4: Simplify right side
    7,907.45x = 49,658,065.85
  5. Step 5: Solve for x
    x = 49,658,065.85/7,907.45
  6. Step 6: Final answer
    x = 6,279.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.