Home / 2,515.20-3,771.84-1,053.96

Finding the Fourth Proportional to 2,515.20, 3,771.84 and 1,053.96

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Solution

The fourth proportional to 2,515.20, 3,771.84 and 1,053.96 is: 1,580.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.20 : 3,771.84 = 1,053.96 : x
  2. Step 2: Convert to fraction form
    2,515.20/3,771.84 = 1,053.96/x
  3. Step 3: Cross multiply
    2,515.20x = 3,771.84 × 1,053.96
  4. Step 4: Simplify right side
    2,515.20x = 3,975,368.49
  5. Step 5: Solve for x
    x = 3,975,368.49/2,515.20
  6. Step 6: Final answer
    x = 1,580.54

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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.