Home / 7,720.49-11,580.64-2,173.55

Finding the Fourth Proportional to 7,720.49, 11,580.64 and 2,173.55

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Solution

The fourth proportional to 7,720.49, 11,580.64 and 2,173.55 is: 3,260.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.49 : 11,580.64 = 2,173.55 : x
  2. Step 2: Convert to fraction form
    7,720.49/11,580.64 = 2,173.55/x
  3. Step 3: Cross multiply
    7,720.49x = 11,580.64 × 2,173.55
  4. Step 4: Simplify right side
    7,720.49x = 25,171,036.73
  5. Step 5: Solve for x
    x = 25,171,036.73/7,720.49
  6. Step 6: Final answer
    x = 3,260.29

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1.5x scale

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.