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Finding the Fourth Proportional to 3,393.54, 5,090.31 and 1,931.94

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Solution

The fourth proportional to 3,393.54, 5,090.31 and 1,931.94 is: 2,897.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.54 : 5,090.31 = 1,931.94 : x
  2. Step 2: Convert to fraction form
    3,393.54/5,090.31 = 1,931.94/x
  3. Step 3: Cross multiply
    3,393.54x = 5,090.31 × 1,931.94
  4. Step 4: Simplify right side
    3,393.54x = 9,834,173.50
  5. Step 5: Solve for x
    x = 9,834,173.50/3,393.54
  6. Step 6: Final answer
    x = 2,897.91

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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.