Home / 7,783.28-11,678.35-4,084.62

Finding the Fourth Proportional to 7,783.28, 11,678.35 and 4,084.62

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Solution

The fourth proportional to 7,783.28, 11,678.35 and 4,084.62 is: 6,128.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,783.28 : 11,678.35 = 4,084.62 : x
  2. Step 2: Convert to fraction form
    7,783.28/11,678.35 = 4,084.62/x
  3. Step 3: Cross multiply
    7,783.28x = 11,678.35 × 4,084.62
  4. Step 4: Simplify right side
    7,783.28x = 47,701,558.12
  5. Step 5: Solve for x
    x = 47,701,558.12/7,783.28
  6. Step 6: Final answer
    x = 6,128.72

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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.