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Finding the Fourth Proportional to 8,347.82, 12,517.95 and 3,970.58

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Solution

The fourth proportional to 8,347.82, 12,517.95 and 3,970.58 is: 5,954.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.82 : 12,517.95 = 3,970.58 : x
  2. Step 2: Convert to fraction form
    8,347.82/12,517.95 = 3,970.58/x
  3. Step 3: Cross multiply
    8,347.82x = 12,517.95 × 3,970.58
  4. Step 4: Simplify right side
    8,347.82x = 49,703,521.91
  5. Step 5: Solve for x
    x = 49,703,521.91/8,347.82
  6. Step 6: Final answer
    x = 5,954.07

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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.