Home / 2,515.79-3,775.74-1,283.56

Finding the Fourth Proportional to 2,515.79, 3,775.74 and 1,283.56

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Solution

The fourth proportional to 2,515.79, 3,775.74 and 1,283.56 is: 1,926.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.79 : 3,775.74 = 1,283.56 : x
  2. Step 2: Convert to fraction form
    2,515.79/3,775.74 = 1,283.56/x
  3. Step 3: Cross multiply
    2,515.79x = 3,775.74 × 1,283.56
  4. Step 4: Simplify right side
    2,515.79x = 4,846,388.83
  5. Step 5: Solve for x
    x = 4,846,388.83/2,515.79
  6. Step 6: Final answer
    x = 1,926.39

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1.5x scale

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.