Home / 3,138.58-4,329.87-1,957.60

Finding the Fourth Proportional to 3,138.58, 4,329.87 and 1,957.60

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Solution

The fourth proportional to 3,138.58, 4,329.87 and 1,957.60 is: 2,700.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.58 : 4,329.87 = 1,957.60 : x
  2. Step 2: Convert to fraction form
    3,138.58/4,329.87 = 1,957.60/x
  3. Step 3: Cross multiply
    3,138.58x = 4,329.87 × 1,957.60
  4. Step 4: Simplify right side
    3,138.58x = 8,476,131.86
  5. Step 5: Solve for x
    x = 8,476,131.86/3,138.58
  6. Step 6: Final answer
    x = 2,700.63

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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.