Home / 6,874.07-9,486.32-3,889.76

Finding the Fourth Proportional to 6,874.07, 9,486.32 and 3,889.76

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Solution

The fourth proportional to 6,874.07, 9,486.32 and 3,889.76 is: 5,367.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,874.07 : 9,486.32 = 3,889.76 : x
  2. Step 2: Convert to fraction form
    6,874.07/9,486.32 = 3,889.76/x
  3. Step 3: Cross multiply
    6,874.07x = 9,486.32 × 3,889.76
  4. Step 4: Simplify right side
    6,874.07x = 36,899,441.20
  5. Step 5: Solve for x
    x = 36,899,441.20/6,874.07
  6. Step 6: Final answer
    x = 5,367.92

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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.