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Finding the Fourth Proportional to 6,415.87, 8,854.04 and 4,025.94

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Solution

The fourth proportional to 6,415.87, 8,854.04 and 4,025.94 is: 5,555.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.87 : 8,854.04 = 4,025.94 : x
  2. Step 2: Convert to fraction form
    6,415.87/8,854.04 = 4,025.94/x
  3. Step 3: Cross multiply
    6,415.87x = 8,854.04 × 4,025.94
  4. Step 4: Simplify right side
    6,415.87x = 35,645,833.80
  5. Step 5: Solve for x
    x = 35,645,833.80/6,415.87
  6. Step 6: Final answer
    x = 5,555.88

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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.