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Finding the Fourth Proportional to 8,393.98, 12,640.94 and 7,311.41

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Solution

The fourth proportional to 8,393.98, 12,640.94 and 7,311.41 is: 11,010.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.98 : 12,640.94 = 7,311.41 : x
  2. Step 2: Convert to fraction form
    8,393.98/12,640.94 = 7,311.41/x
  3. Step 3: Cross multiply
    8,393.98x = 12,640.94 × 7,311.41
  4. Step 4: Simplify right side
    8,393.98x = 92,423,090.17
  5. Step 5: Solve for x
    x = 92,423,090.17/8,393.98
  6. Step 6: Final answer
    x = 11,010.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.