Home / 2,415.70-3,618.80-1,372.58

Finding the Fourth Proportional to 2,415.70, 3,618.80 and 1,372.58

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Solution

The fourth proportional to 2,415.70, 3,618.80 and 1,372.58 is: 2,056.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.70 : 3,618.80 = 1,372.58 : x
  2. Step 2: Convert to fraction form
    2,415.70/3,618.80 = 1,372.58/x
  3. Step 3: Cross multiply
    2,415.70x = 3,618.80 × 1,372.58
  4. Step 4: Simplify right side
    2,415.70x = 4,967,067.55
  5. Step 5: Solve for x
    x = 4,967,067.55/2,415.70
  6. Step 6: Final answer
    x = 2,056.17

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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.