Home / 9,121.05-13,681.37-7,884.79

Finding the Fourth Proportional to 9,121.05, 13,681.37 and 7,884.79

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Solution

The fourth proportional to 9,121.05, 13,681.37 and 7,884.79 is: 11,827.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.05 : 13,681.37 = 7,884.79 : x
  2. Step 2: Convert to fraction form
    9,121.05/13,681.37 = 7,884.79/x
  3. Step 3: Cross multiply
    9,121.05x = 13,681.37 × 7,884.79
  4. Step 4: Simplify right side
    9,121.05x = 107,874,729.36
  5. Step 5: Solve for x
    x = 107,874,729.36/9,121.05
  6. Step 6: Final answer
    x = 11,827.01

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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.