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Finding the Fourth Proportional to 7,910.22, 10,915.86 and 4,373.43

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Solution

The fourth proportional to 7,910.22, 10,915.86 and 4,373.43 is: 6,035.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.22 : 10,915.86 = 4,373.43 : x
  2. Step 2: Convert to fraction form
    7,910.22/10,915.86 = 4,373.43/x
  3. Step 3: Cross multiply
    7,910.22x = 10,915.86 × 4,373.43
  4. Step 4: Simplify right side
    7,910.22x = 47,739,749.60
  5. Step 5: Solve for x
    x = 47,739,749.60/7,910.22
  6. Step 6: Final answer
    x = 6,035.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.