Home / 3,129.58-4,314.90-2,008.54

Finding the Fourth Proportional to 3,129.58, 4,314.90 and 2,008.54

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Solution

The fourth proportional to 3,129.58, 4,314.90 and 2,008.54 is: 2,769.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.58 : 4,314.90 = 2,008.54 : x
  2. Step 2: Convert to fraction form
    3,129.58/4,314.90 = 2,008.54/x
  3. Step 3: Cross multiply
    3,129.58x = 4,314.90 × 2,008.54
  4. Step 4: Simplify right side
    3,129.58x = 8,666,649.25
  5. Step 5: Solve for x
    x = 8,666,649.25/3,129.58
  6. Step 6: Final answer
    x = 2,769.27

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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.