Home / 1,890.88-2,836.32-1,266.64

Finding the Fourth Proportional to 1,890.88, 2,836.32 and 1,266.64

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Solution

The fourth proportional to 1,890.88, 2,836.32 and 1,266.64 is: 1,899.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.88 : 2,836.32 = 1,266.64 : x
  2. Step 2: Convert to fraction form
    1,890.88/2,836.32 = 1,266.64/x
  3. Step 3: Cross multiply
    1,890.88x = 2,836.32 × 1,266.64
  4. Step 4: Simplify right side
    1,890.88x = 3,592,596.36
  5. Step 5: Solve for x
    x = 3,592,596.36/1,890.88
  6. Step 6: Final answer
    x = 1,899.96

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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.