Home / 8,515.10-12,768.78-3,582.06

Finding the Fourth Proportional to 8,515.10, 12,768.78 and 3,582.06

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Solution

The fourth proportional to 8,515.10, 12,768.78 and 3,582.06 is: 5,371.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.10 : 12,768.78 = 3,582.06 : x
  2. Step 2: Convert to fraction form
    8,515.10/12,768.78 = 3,582.06/x
  3. Step 3: Cross multiply
    8,515.10x = 12,768.78 × 3,582.06
  4. Step 4: Simplify right side
    8,515.10x = 45,738,536.09
  5. Step 5: Solve for x
    x = 45,738,536.09/8,515.10
  6. Step 6: Final answer
    x = 5,371.46

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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.