Home / 7,983.72-11,975.56-2,140.36

Finding the Fourth Proportional to 7,983.72, 11,975.56 and 2,140.36

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Solution

The fourth proportional to 7,983.72, 11,975.56 and 2,140.36 is: 3,210.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.72 : 11,975.56 = 2,140.36 : x
  2. Step 2: Convert to fraction form
    7,983.72/11,975.56 = 2,140.36/x
  3. Step 3: Cross multiply
    7,983.72x = 11,975.56 × 2,140.36
  4. Step 4: Simplify right side
    7,983.72x = 25,632,009.60
  5. Step 5: Solve for x
    x = 25,632,009.60/7,983.72
  6. Step 6: Final answer
    x = 3,210.53

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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.