Home / 7,879.20-10,874.75-4,894.35

Finding the Fourth Proportional to 7,879.20, 10,874.75 and 4,894.35

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Solution

The fourth proportional to 7,879.20, 10,874.75 and 4,894.35 is: 6,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.20 : 10,874.75 = 4,894.35 : x
  2. Step 2: Convert to fraction form
    7,879.20/10,874.75 = 4,894.35/x
  3. Step 3: Cross multiply
    7,879.20x = 10,874.75 × 4,894.35
  4. Step 4: Simplify right side
    7,879.20x = 53,224,832.66
  5. Step 5: Solve for x
    x = 53,224,832.66/7,879.20
  6. Step 6: Final answer
    x = 6,755.11

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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.