Home / 4,137.80-5,718.36-3,390.60

Finding the Fourth Proportional to 4,137.80, 5,718.36 and 3,390.60

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Solution

The fourth proportional to 4,137.80, 5,718.36 and 3,390.60 is: 4,685.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,137.80 : 5,718.36 = 3,390.60 : x
  2. Step 2: Convert to fraction form
    4,137.80/5,718.36 = 3,390.60/x
  3. Step 3: Cross multiply
    4,137.80x = 5,718.36 × 3,390.60
  4. Step 4: Simplify right side
    4,137.80x = 19,388,671.42
  5. Step 5: Solve for x
    x = 19,388,671.42/4,137.80
  6. Step 6: Final answer
    x = 4,685.74

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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.