Home / 6,143.90-9,218.55-2,855.30

Finding the Fourth Proportional to 6,143.90, 9,218.55 and 2,855.30

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Solution

The fourth proportional to 6,143.90, 9,218.55 and 2,855.30 is: 4,284.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.90 : 9,218.55 = 2,855.30 : x
  2. Step 2: Convert to fraction form
    6,143.90/9,218.55 = 2,855.30/x
  3. Step 3: Cross multiply
    6,143.90x = 9,218.55 × 2,855.30
  4. Step 4: Simplify right side
    6,143.90x = 26,321,725.82
  5. Step 5: Solve for x
    x = 26,321,725.82/6,143.90
  6. Step 6: Final answer
    x = 4,284.20

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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.