Home / 3,124.11-4,680.69-2,785.12

Finding the Fourth Proportional to 3,124.11, 4,680.69 and 2,785.12

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Solution

The fourth proportional to 3,124.11, 4,680.69 and 2,785.12 is: 4,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.11 : 4,680.69 = 2,785.12 : x
  2. Step 2: Convert to fraction form
    3,124.11/4,680.69 = 2,785.12/x
  3. Step 3: Cross multiply
    3,124.11x = 4,680.69 × 2,785.12
  4. Step 4: Simplify right side
    3,124.11x = 13,036,283.33
  5. Step 5: Solve for x
    x = 13,036,283.33/3,124.11
  6. Step 6: Final answer
    x = 4,172.80

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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.