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Finding the Fourth Proportional to 3,338.47, 5,010.74 and 1,779.78

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Solution

The fourth proportional to 3,338.47, 5,010.74 and 1,779.78 is: 2,671.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,338.47 : 5,010.74 = 1,779.78 : x
  2. Step 2: Convert to fraction form
    3,338.47/5,010.74 = 1,779.78/x
  3. Step 3: Cross multiply
    3,338.47x = 5,010.74 × 1,779.78
  4. Step 4: Simplify right side
    3,338.47x = 8,918,014.84
  5. Step 5: Solve for x
    x = 8,918,014.84/3,338.47
  6. Step 6: Final answer
    x = 2,671.29

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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.