Home / 1,406.12-2,107.80-1,210.44

Finding the Fourth Proportional to 1,406.12, 2,107.80 and 1,210.44

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Solution

The fourth proportional to 1,406.12, 2,107.80 and 1,210.44 is: 1,814.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,406.12 : 2,107.80 = 1,210.44 : x
  2. Step 2: Convert to fraction form
    1,406.12/2,107.80 = 1,210.44/x
  3. Step 3: Cross multiply
    1,406.12x = 2,107.80 × 1,210.44
  4. Step 4: Simplify right side
    1,406.12x = 2,551,365.43
  5. Step 5: Solve for x
    x = 2,551,365.43/1,406.12
  6. Step 6: Final answer
    x = 1,814.47

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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.