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Finding the Fourth Proportional to 6,406.28, 8,840.64 and 3,573.64

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Solution

The fourth proportional to 6,406.28, 8,840.64 and 3,573.64 is: 4,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,406.28 : 8,840.64 = 3,573.64 : x
  2. Step 2: Convert to fraction form
    6,406.28/8,840.64 = 3,573.64/x
  3. Step 3: Cross multiply
    6,406.28x = 8,840.64 × 3,573.64
  4. Step 4: Simplify right side
    6,406.28x = 31,593,264.73
  5. Step 5: Solve for x
    x = 31,593,264.73/6,406.28
  6. Step 6: Final answer
    x = 4,931.61

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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.