Home / 8,719.45-13,071.20-3,787.31

Finding the Fourth Proportional to 8,719.45, 13,071.20 and 3,787.31

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Solution

The fourth proportional to 8,719.45, 13,071.20 and 3,787.31 is: 5,677.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.45 : 13,071.20 = 3,787.31 : x
  2. Step 2: Convert to fraction form
    8,719.45/13,071.20 = 3,787.31/x
  3. Step 3: Cross multiply
    8,719.45x = 13,071.20 × 3,787.31
  4. Step 4: Simplify right side
    8,719.45x = 49,504,686.47
  5. Step 5: Solve for x
    x = 49,504,686.47/8,719.45
  6. Step 6: Final answer
    x = 5,677.50

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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.