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Finding the Fourth Proportional to 3,556.84, 4,905.67 and 2,280.84

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Solution

The fourth proportional to 3,556.84, 4,905.67 and 2,280.84 is: 3,145.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.84 : 4,905.67 = 2,280.84 : x
  2. Step 2: Convert to fraction form
    3,556.84/4,905.67 = 2,280.84/x
  3. Step 3: Cross multiply
    3,556.84x = 4,905.67 × 2,280.84
  4. Step 4: Simplify right side
    3,556.84x = 11,189,060.63
  5. Step 5: Solve for x
    x = 11,189,060.63/3,556.84
  6. Step 6: Final answer
    x = 3,145.78

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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.