Home / 1,411.26-2,116.12-1,120.63

Finding the Fourth Proportional to 1,411.26, 2,116.12 and 1,120.63

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Solution

The fourth proportional to 1,411.26, 2,116.12 and 1,120.63 is: 1,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.26 : 2,116.12 = 1,120.63 : x
  2. Step 2: Convert to fraction form
    1,411.26/2,116.12 = 1,120.63/x
  3. Step 3: Cross multiply
    1,411.26x = 2,116.12 × 1,120.63
  4. Step 4: Simplify right side
    1,411.26x = 2,371,379.46
  5. Step 5: Solve for x
    x = 2,371,379.46/1,411.26
  6. Step 6: Final answer
    x = 1,680.33

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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.