Home / 3,000.81-4,143.32-1,939.19

Finding the Fourth Proportional to 3,000.81, 4,143.32 and 1,939.19

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Solution

The fourth proportional to 3,000.81, 4,143.32 and 1,939.19 is: 2,677.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000.81 : 4,143.32 = 1,939.19 : x
  2. Step 2: Convert to fraction form
    3,000.81/4,143.32 = 1,939.19/x
  3. Step 3: Cross multiply
    3,000.81x = 4,143.32 × 1,939.19
  4. Step 4: Simplify right side
    3,000.81x = 8,034,684.88
  5. Step 5: Solve for x
    x = 8,034,684.88/3,000.81
  6. Step 6: Final answer
    x = 2,677.50

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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.