Home / 2,515.56-3,767.87-1,214.30

Finding the Fourth Proportional to 2,515.56, 3,767.87 and 1,214.30

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Solution

The fourth proportional to 2,515.56, 3,767.87 and 1,214.30 is: 1,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.56 : 3,767.87 = 1,214.30 : x
  2. Step 2: Convert to fraction form
    2,515.56/3,767.87 = 1,214.30/x
  3. Step 3: Cross multiply
    2,515.56x = 3,767.87 × 1,214.30
  4. Step 4: Simplify right side
    2,515.56x = 4,575,315.80
  5. Step 5: Solve for x
    x = 4,575,315.80/2,515.56
  6. Step 6: Final answer
    x = 1,818.80

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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.