Home / 7,278.94-10,917.34-3,580.18

Finding the Fourth Proportional to 7,278.94, 10,917.34 and 3,580.18

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Solution

The fourth proportional to 7,278.94, 10,917.34 and 3,580.18 is: 5,369.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.94 : 10,917.34 = 3,580.18 : x
  2. Step 2: Convert to fraction form
    7,278.94/10,917.34 = 3,580.18/x
  3. Step 3: Cross multiply
    7,278.94x = 10,917.34 × 3,580.18
  4. Step 4: Simplify right side
    7,278.94x = 39,086,042.32
  5. Step 5: Solve for x
    x = 39,086,042.32/7,278.94
  6. Step 6: Final answer
    x = 5,369.74

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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.