Home / 1,406.66-2,107.77-748.36

Finding the Fourth Proportional to 1,406.66, 2,107.77 and 748.36

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Solution

The fourth proportional to 1,406.66, 2,107.77 and 748.36 is: 1,121.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,406.66 : 2,107.77 = 748.36 : x
  2. Step 2: Convert to fraction form
    1,406.66/2,107.77 = 748.36/x
  3. Step 3: Cross multiply
    1,406.66x = 2,107.77 × 748.36
  4. Step 4: Simplify right side
    1,406.66x = 1,577,376.71
  5. Step 5: Solve for x
    x = 1,577,376.71/1,406.66
  6. Step 6: Final answer
    x = 1,121.36

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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.