Home / 7,943.66-11,915.91-2,100.11

Finding the Fourth Proportional to 7,943.66, 11,915.91 and 2,100.11

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Solution

The fourth proportional to 7,943.66, 11,915.91 and 2,100.11 is: 3,150.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.66 : 11,915.91 = 2,100.11 : x
  2. Step 2: Convert to fraction form
    7,943.66/11,915.91 = 2,100.11/x
  3. Step 3: Cross multiply
    7,943.66x = 11,915.91 × 2,100.11
  4. Step 4: Simplify right side
    7,943.66x = 25,024,721.75
  5. Step 5: Solve for x
    x = 25,024,721.75/7,943.66
  6. Step 6: Final answer
    x = 3,150.28

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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.