Home / 2,436.40-3,658.20-1,889.20

Finding the Fourth Proportional to 2,436.40, 3,658.20 and 1,889.20

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Solution

The fourth proportional to 2,436.40, 3,658.20 and 1,889.20 is: 2,836.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,436.40 : 3,658.20 = 1,889.20 : x
  2. Step 2: Convert to fraction form
    2,436.40/3,658.20 = 1,889.20/x
  3. Step 3: Cross multiply
    2,436.40x = 3,658.20 × 1,889.20
  4. Step 4: Simplify right side
    2,436.40x = 6,911,071.44
  5. Step 5: Solve for x
    x = 6,911,071.44/2,436.40
  6. Step 6: Final answer
    x = 2,836.59

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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.