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Finding the Fourth Proportional to 6,253.98, 8,630.13 and 3,420.79

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Solution

The fourth proportional to 6,253.98, 8,630.13 and 3,420.79 is: 4,720.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,253.98 : 8,630.13 = 3,420.79 : x
  2. Step 2: Convert to fraction form
    6,253.98/8,630.13 = 3,420.79/x
  3. Step 3: Cross multiply
    6,253.98x = 8,630.13 × 3,420.79
  4. Step 4: Simplify right side
    6,253.98x = 29,521,840.83
  5. Step 5: Solve for x
    x = 29,521,840.83/6,253.98
  6. Step 6: Final answer
    x = 4,720.49

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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.