Home / 1,921.35-2,651.59-1,448.41

Finding the Fourth Proportional to 1,921.35, 2,651.59 and 1,448.41

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Solution

The fourth proportional to 1,921.35, 2,651.59 and 1,448.41 is: 1,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.35 : 2,651.59 = 1,448.41 : x
  2. Step 2: Convert to fraction form
    1,921.35/2,651.59 = 1,448.41/x
  3. Step 3: Cross multiply
    1,921.35x = 2,651.59 × 1,448.41
  4. Step 4: Simplify right side
    1,921.35x = 3,840,574.02
  5. Step 5: Solve for x
    x = 3,840,574.02/1,921.35
  6. Step 6: Final answer
    x = 1,998.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.