Home / 8,660.19-12,991.48-3,112.50

Finding the Fourth Proportional to 8,660.19, 12,991.48 and 3,112.50

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Solution

The fourth proportional to 8,660.19, 12,991.48 and 3,112.50 is: 4,669.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.19 : 12,991.48 = 3,112.50 : x
  2. Step 2: Convert to fraction form
    8,660.19/12,991.48 = 3,112.50/x
  3. Step 3: Cross multiply
    8,660.19x = 12,991.48 × 3,112.50
  4. Step 4: Simplify right side
    8,660.19x = 40,435,973.72
  5. Step 5: Solve for x
    x = 40,435,973.72/8,660.19
  6. Step 6: Final answer
    x = 4,669.18

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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.