Home / 6,520.64-9,756.69-3,889.55

Finding the Fourth Proportional to 6,520.64, 9,756.69 and 3,889.55

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Solution

The fourth proportional to 6,520.64, 9,756.69 and 3,889.55 is: 5,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520.64 : 9,756.69 = 3,889.55 : x
  2. Step 2: Convert to fraction form
    6,520.64/9,756.69 = 3,889.55/x
  3. Step 3: Cross multiply
    6,520.64x = 9,756.69 × 3,889.55
  4. Step 4: Simplify right side
    6,520.64x = 37,949,143.40
  5. Step 5: Solve for x
    x = 37,949,143.40/6,520.64
  6. Step 6: Final answer
    x = 5,819.85

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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.