Home / 7,943.46-11,915.28-2,100.01

Finding the Fourth Proportional to 7,943.46, 11,915.28 and 2,100.01

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Solution

The fourth proportional to 7,943.46, 11,915.28 and 2,100.01 is: 3,150.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.46 : 11,915.28 = 2,100.01 : x
  2. Step 2: Convert to fraction form
    7,943.46/11,915.28 = 2,100.01/x
  3. Step 3: Cross multiply
    7,943.46x = 11,915.28 × 2,100.01
  4. Step 4: Simplify right side
    7,943.46x = 25,022,207.15
  5. Step 5: Solve for x
    x = 25,022,207.15/7,943.46
  6. Step 6: Final answer
    x = 3,150.04

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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.