Home / 7,931.07-11,897.28-2,087.64

Finding the Fourth Proportional to 7,931.07, 11,897.28 and 2,087.64

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Solution

The fourth proportional to 7,931.07, 11,897.28 and 2,087.64 is: 3,131.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.07 : 11,897.28 = 2,087.64 : x
  2. Step 2: Convert to fraction form
    7,931.07/11,897.28 = 2,087.64/x
  3. Step 3: Cross multiply
    7,931.07x = 11,897.28 × 2,087.64
  4. Step 4: Simplify right side
    7,931.07x = 24,837,237.62
  5. Step 5: Solve for x
    x = 24,837,237.62/7,931.07
  6. Step 6: Final answer
    x = 3,131.64

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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.