Home / 5,639.69-8,454.68-2,720.05

Finding the Fourth Proportional to 5,639.69, 8,454.68 and 2,720.05

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Solution

The fourth proportional to 5,639.69, 8,454.68 and 2,720.05 is: 4,077.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.69 : 8,454.68 = 2,720.05 : x
  2. Step 2: Convert to fraction form
    5,639.69/8,454.68 = 2,720.05/x
  3. Step 3: Cross multiply
    5,639.69x = 8,454.68 × 2,720.05
  4. Step 4: Simplify right side
    5,639.69x = 22,997,096.46
  5. Step 5: Solve for x
    x = 22,997,096.46/5,639.69
  6. Step 6: Final answer
    x = 4,077.72

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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.