Home / 7,931.13-11,896.70-2,087.25

Finding the Fourth Proportional to 7,931.13, 11,896.70 and 2,087.25

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Solution

The fourth proportional to 7,931.13, 11,896.70 and 2,087.25 is: 3,130.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.13 : 11,896.70 = 2,087.25 : x
  2. Step 2: Convert to fraction form
    7,931.13/11,896.70 = 2,087.25/x
  3. Step 3: Cross multiply
    7,931.13x = 11,896.70 × 2,087.25
  4. Step 4: Simplify right side
    7,931.13x = 24,831,376.64
  5. Step 5: Solve for x
    x = 24,831,376.64/7,931.13
  6. Step 6: Final answer
    x = 3,130.88

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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.