Home / 1,266.10-1,890.63-1,258.41

Finding the Fourth Proportional to 1,266.10, 1,890.63 and 1,258.41

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Solution

The fourth proportional to 1,266.10, 1,890.63 and 1,258.41 is: 1,879.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.10 : 1,890.63 = 1,258.41 : x
  2. Step 2: Convert to fraction form
    1,266.10/1,890.63 = 1,258.41/x
  3. Step 3: Cross multiply
    1,266.10x = 1,890.63 × 1,258.41
  4. Step 4: Simplify right side
    1,266.10x = 2,379,187.70
  5. Step 5: Solve for x
    x = 2,379,187.70/1,266.10
  6. Step 6: Final answer
    x = 1,879.15

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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.