Home / 3,160.40-4,739.34-1,185.74

Finding the Fourth Proportional to 3,160.40, 4,739.34 and 1,185.74

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Solution

The fourth proportional to 3,160.40, 4,739.34 and 1,185.74 is: 1,778.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.40 : 4,739.34 = 1,185.74 : x
  2. Step 2: Convert to fraction form
    3,160.40/4,739.34 = 1,185.74/x
  3. Step 3: Cross multiply
    3,160.40x = 4,739.34 × 1,185.74
  4. Step 4: Simplify right side
    3,160.40x = 5,619,625.01
  5. Step 5: Solve for x
    x = 5,619,625.01/3,160.40
  6. Step 6: Final answer
    x = 1,778.14

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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.