Home / 3,090.12-4,627.08-2,118.12

Finding the Fourth Proportional to 3,090.12, 4,627.08 and 2,118.12

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Solution

The fourth proportional to 3,090.12, 4,627.08 and 2,118.12 is: 3,171.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.12 : 4,627.08 = 2,118.12 : x
  2. Step 2: Convert to fraction form
    3,090.12/4,627.08 = 2,118.12/x
  3. Step 3: Cross multiply
    3,090.12x = 4,627.08 × 2,118.12
  4. Step 4: Simplify right side
    3,090.12x = 9,800,710.69
  5. Step 5: Solve for x
    x = 9,800,710.69/3,090.12
  6. Step 6: Final answer
    x = 3,171.63

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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.