Home / 7,945.88-11,915.11-2,948.05

Finding the Fourth Proportional to 7,945.88, 11,915.11 and 2,948.05

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Solution

The fourth proportional to 7,945.88, 11,915.11 and 2,948.05 is: 4,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.88 : 11,915.11 = 2,948.05 : x
  2. Step 2: Convert to fraction form
    7,945.88/11,915.11 = 2,948.05/x
  3. Step 3: Cross multiply
    7,945.88x = 11,915.11 × 2,948.05
  4. Step 4: Simplify right side
    7,945.88x = 35,126,340.04
  5. Step 5: Solve for x
    x = 35,126,340.04/7,945.88
  6. Step 6: Final answer
    x = 4,420.70

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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.