Home / 3,186.90-4,398.93-1,861.14

Finding the Fourth Proportional to 3,186.90, 4,398.93 and 1,861.14

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Solution

The fourth proportional to 3,186.90, 4,398.93 and 1,861.14 is: 2,568.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.90 : 4,398.93 = 1,861.14 : x
  2. Step 2: Convert to fraction form
    3,186.90/4,398.93 = 1,861.14/x
  3. Step 3: Cross multiply
    3,186.90x = 4,398.93 × 1,861.14
  4. Step 4: Simplify right side
    3,186.90x = 8,187,024.58
  5. Step 5: Solve for x
    x = 8,187,024.58/3,186.90
  6. Step 6: Final answer
    x = 2,568.96

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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.