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Finding the Fourth Proportional to 6,425.88, 8,872.74 and 4,931.43

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Solution

The fourth proportional to 6,425.88, 8,872.74 and 4,931.43 is: 6,809.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,425.88 : 8,872.74 = 4,931.43 : x
  2. Step 2: Convert to fraction form
    6,425.88/8,872.74 = 4,931.43/x
  3. Step 3: Cross multiply
    6,425.88x = 8,872.74 × 4,931.43
  4. Step 4: Simplify right side
    6,425.88x = 43,755,296.22
  5. Step 5: Solve for x
    x = 43,755,296.22/6,425.88
  6. Step 6: Final answer
    x = 6,809.23

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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.