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Finding the Fourth Proportional to 7,090.93, 10,620.20 and 3,395.76

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Solution

The fourth proportional to 7,090.93, 10,620.20 and 3,395.76 is: 5,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.93 : 10,620.20 = 3,395.76 : x
  2. Step 2: Convert to fraction form
    7,090.93/10,620.20 = 3,395.76/x
  3. Step 3: Cross multiply
    7,090.93x = 10,620.20 × 3,395.76
  4. Step 4: Simplify right side
    7,090.93x = 36,063,580.27
  5. Step 5: Solve for x
    x = 36,063,580.27/7,090.93
  6. Step 6: Final answer
    x = 5,085.87

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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.