Home / 5,137.80-7,710.39-2,218.20

Finding the Fourth Proportional to 5,137.80, 7,710.39 and 2,218.20

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Solution

The fourth proportional to 5,137.80, 7,710.39 and 2,218.20 is: 3,328.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.80 : 7,710.39 = 2,218.20 : x
  2. Step 2: Convert to fraction form
    5,137.80/7,710.39 = 2,218.20/x
  3. Step 3: Cross multiply
    5,137.80x = 7,710.39 × 2,218.20
  4. Step 4: Simplify right side
    5,137.80x = 17,103,187.10
  5. Step 5: Solve for x
    x = 17,103,187.10/5,137.80
  6. Step 6: Final answer
    x = 3,328.89

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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.