Home / 11,783.91-17,678.46-3,886.11

Finding the Fourth Proportional to 11,783.91, 17,678.46 and 3,886.11

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Solution

The fourth proportional to 11,783.91, 17,678.46 and 3,886.11 is: 5,830.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,783.91 : 17,678.46 = 3,886.11 : x
  2. Step 2: Convert to fraction form
    11,783.91/17,678.46 = 3,886.11/x
  3. Step 3: Cross multiply
    11,783.91x = 17,678.46 × 3,886.11
  4. Step 4: Simplify right side
    11,783.91x = 68,700,440.19
  5. Step 5: Solve for x
    x = 68,700,440.19/11,783.91
  6. Step 6: Final answer
    x = 5,830.02

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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.