Home / 2,920.19-4,029.86-1,872.25

Finding the Fourth Proportional to 2,920.19, 4,029.86 and 1,872.25

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Solution

The fourth proportional to 2,920.19, 4,029.86 and 1,872.25 is: 2,583.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.19 : 4,029.86 = 1,872.25 : x
  2. Step 2: Convert to fraction form
    2,920.19/4,029.86 = 1,872.25/x
  3. Step 3: Cross multiply
    2,920.19x = 4,029.86 × 1,872.25
  4. Step 4: Simplify right side
    2,920.19x = 7,544,905.39
  5. Step 5: Solve for x
    x = 7,544,905.39/2,920.19
  6. Step 6: Final answer
    x = 2,583.70

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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.