Home / 1,400.94-1,921.90-1,317.18

Finding the Fourth Proportional to 1,400.94, 1,921.90 and 1,317.18

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Solution

The fourth proportional to 1,400.94, 1,921.90 and 1,317.18 is: 1,806.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.94 : 1,921.90 = 1,317.18 : x
  2. Step 2: Convert to fraction form
    1,400.94/1,921.90 = 1,317.18/x
  3. Step 3: Cross multiply
    1,400.94x = 1,921.90 × 1,317.18
  4. Step 4: Simplify right side
    1,400.94x = 2,531,481.66
  5. Step 5: Solve for x
    x = 2,531,481.66/1,400.94
  6. Step 6: Final answer
    x = 1,806.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.