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Finding the Fourth Proportional to 6,435, 8,880.84 and 4,076.28

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Solution

The fourth proportional to 6,435, 8,880.84 and 4,076.28 is: 5,625.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,435 : 8,880.84 = 4,076.28 : x
  2. Step 2: Convert to fraction form
    6,435/8,880.84 = 4,076.28/x
  3. Step 3: Cross multiply
    6,435x = 8,880.84 × 4,076.28
  4. Step 4: Simplify right side
    6,435x = 36,200,790.48
  5. Step 5: Solve for x
    x = 36,200,790.48/6,435
  6. Step 6: Final answer
    x = 5,625.61

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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.