Home / 4,186.22-6,270.21-1,988.28

Finding the Fourth Proportional to 4,186.22, 6,270.21 and 1,988.28

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Solution

The fourth proportional to 4,186.22, 6,270.21 and 1,988.28 is: 2,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,186.22 : 6,270.21 = 1,988.28 : x
  2. Step 2: Convert to fraction form
    4,186.22/6,270.21 = 1,988.28/x
  3. Step 3: Cross multiply
    4,186.22x = 6,270.21 × 1,988.28
  4. Step 4: Simplify right side
    4,186.22x = 12,466,933.14
  5. Step 5: Solve for x
    x = 12,466,933.14/4,186.22
  6. Step 6: Final answer
    x = 2,978.09

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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.