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Finding the Fourth Proportional to 8,240.70, 12,359.70 and 2,317.98

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Solution

The fourth proportional to 8,240.70, 12,359.70 and 2,317.98 is: 3,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,240.70 : 12,359.70 = 2,317.98 : x
  2. Step 2: Convert to fraction form
    8,240.70/12,359.70 = 2,317.98/x
  3. Step 3: Cross multiply
    8,240.70x = 12,359.70 × 2,317.98
  4. Step 4: Simplify right side
    8,240.70x = 28,649,537.41
  5. Step 5: Solve for x
    x = 28,649,537.41/8,240.70
  6. Step 6: Final answer
    x = 3,476.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.