Home / 9,090.50-13,628.44-5,139.32

Finding the Fourth Proportional to 9,090.50, 13,628.44 and 5,139.32

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Solution

The fourth proportional to 9,090.50, 13,628.44 and 5,139.32 is: 7,704.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.50 : 13,628.44 = 5,139.32 : x
  2. Step 2: Convert to fraction form
    9,090.50/13,628.44 = 5,139.32/x
  3. Step 3: Cross multiply
    9,090.50x = 13,628.44 × 5,139.32
  4. Step 4: Simplify right side
    9,090.50x = 70,040,914.26
  5. Step 5: Solve for x
    x = 70,040,914.26/9,090.50
  6. Step 6: Final answer
    x = 7,704.85

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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.