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Finding the Fourth Proportional to 6,425.64, 8,862.84 and 4,069.32

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Solution

The fourth proportional to 6,425.64, 8,862.84 and 4,069.32 is: 5,612.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,425.64 : 8,862.84 = 4,069.32 : x
  2. Step 2: Convert to fraction form
    6,425.64/8,862.84 = 4,069.32/x
  3. Step 3: Cross multiply
    6,425.64x = 8,862.84 × 4,069.32
  4. Step 4: Simplify right side
    6,425.64x = 36,065,732.07
  5. Step 5: Solve for x
    x = 36,065,732.07/6,425.64
  6. Step 6: Final answer
    x = 5,612.78

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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.