Home / 1,939.51-2,904.74-1,418.21

Finding the Fourth Proportional to 1,939.51, 2,904.74 and 1,418.21

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Solution

The fourth proportional to 1,939.51, 2,904.74 and 1,418.21 is: 2,124.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.51 : 2,904.74 = 1,418.21 : x
  2. Step 2: Convert to fraction form
    1,939.51/2,904.74 = 1,418.21/x
  3. Step 3: Cross multiply
    1,939.51x = 2,904.74 × 1,418.21
  4. Step 4: Simplify right side
    1,939.51x = 4,119,531.32
  5. Step 5: Solve for x
    x = 4,119,531.32/1,939.51
  6. Step 6: Final answer
    x = 2,124.01

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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.