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Finding the Fourth Proportional to 3,081.75, 4,253.61 and 1,823.21

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Solution

The fourth proportional to 3,081.75, 4,253.61 and 1,823.21 is: 2,516.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.75 : 4,253.61 = 1,823.21 : x
  2. Step 2: Convert to fraction form
    3,081.75/4,253.61 = 1,823.21/x
  3. Step 3: Cross multiply
    3,081.75x = 4,253.61 × 1,823.21
  4. Step 4: Simplify right side
    3,081.75x = 7,755,225.81
  5. Step 5: Solve for x
    x = 7,755,225.81/3,081.75
  6. Step 6: Final answer
    x = 2,516.50

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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.