Home / 7,910.19-10,917.38-5,356.80

Finding the Fourth Proportional to 7,910.19, 10,917.38 and 5,356.80

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Solution

The fourth proportional to 7,910.19, 10,917.38 and 5,356.80 is: 7,393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.19 : 10,917.38 = 5,356.80 : x
  2. Step 2: Convert to fraction form
    7,910.19/10,917.38 = 5,356.80/x
  3. Step 3: Cross multiply
    7,910.19x = 10,917.38 × 5,356.80
  4. Step 4: Simplify right side
    7,910.19x = 58,482,234.58
  5. Step 5: Solve for x
    x = 58,482,234.58/7,910.19
  6. Step 6: Final answer
    x = 7,393.28

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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.