Home / 1,266.20-1,890.65-1,083.32

Finding the Fourth Proportional to 1,266.20, 1,890.65 and 1,083.32

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Solution

The fourth proportional to 1,266.20, 1,890.65 and 1,083.32 is: 1,617.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.20 : 1,890.65 = 1,083.32 : x
  2. Step 2: Convert to fraction form
    1,266.20/1,890.65 = 1,083.32/x
  3. Step 3: Cross multiply
    1,266.20x = 1,890.65 × 1,083.32
  4. Step 4: Simplify right side
    1,266.20x = 2,048,178.96
  5. Step 5: Solve for x
    x = 2,048,178.96/1,266.20
  6. Step 6: Final answer
    x = 1,617.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.