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Finding the Fourth Proportional to 7,291.78, 10,937.67 and 2,910.22

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Solution

The fourth proportional to 7,291.78, 10,937.67 and 2,910.22 is: 4,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291.78 : 10,937.67 = 2,910.22 : x
  2. Step 2: Convert to fraction form
    7,291.78/10,937.67 = 2,910.22/x
  3. Step 3: Cross multiply
    7,291.78x = 10,937.67 × 2,910.22
  4. Step 4: Simplify right side
    7,291.78x = 31,831,025.99
  5. Step 5: Solve for x
    x = 31,831,025.99/7,291.78
  6. Step 6: Final answer
    x = 4,365.33

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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.