Home / 3,336.72-5,000.80-1,386.60

Finding the Fourth Proportional to 3,336.72, 5,000.80 and 1,386.60

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Solution

The fourth proportional to 3,336.72, 5,000.80 and 1,386.60 is: 2,078.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,336.72 : 5,000.80 = 1,386.60 : x
  2. Step 2: Convert to fraction form
    3,336.72/5,000.80 = 1,386.60/x
  3. Step 3: Cross multiply
    3,336.72x = 5,000.80 × 1,386.60
  4. Step 4: Simplify right side
    3,336.72x = 6,934,109.28
  5. Step 5: Solve for x
    x = 6,934,109.28/3,336.72
  6. Step 6: Final answer
    x = 2,078.12

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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.