Home / 7,971.86-11,955.36-2,127.71

Finding the Fourth Proportional to 7,971.86, 11,955.36 and 2,127.71

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Solution

The fourth proportional to 7,971.86, 11,955.36 and 2,127.71 is: 3,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.86 : 11,955.36 = 2,127.71 : x
  2. Step 2: Convert to fraction form
    7,971.86/11,955.36 = 2,127.71/x
  3. Step 3: Cross multiply
    7,971.86x = 11,955.36 × 2,127.71
  4. Step 4: Simplify right side
    7,971.86x = 25,437,539.03
  5. Step 5: Solve for x
    x = 25,437,539.03/7,971.86
  6. Step 6: Final answer
    x = 3,190.92

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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.