Home / 6,720.87-9,270.96-5,580.09

Finding the Fourth Proportional to 6,720.87, 9,270.96 and 5,580.09

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Solution

The fourth proportional to 6,720.87, 9,270.96 and 5,580.09 is: 7,697.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.87 : 9,270.96 = 5,580.09 : x
  2. Step 2: Convert to fraction form
    6,720.87/9,270.96 = 5,580.09/x
  3. Step 3: Cross multiply
    6,720.87x = 9,270.96 × 5,580.09
  4. Step 4: Simplify right side
    6,720.87x = 51,732,770.26
  5. Step 5: Solve for x
    x = 51,732,770.26/6,720.87
  6. Step 6: Final answer
    x = 7,697.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.