Home / 1,867.98-2,798.73-1,378.74

Finding the Fourth Proportional to 1,867.98, 2,798.73 and 1,378.74

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Solution

The fourth proportional to 1,867.98, 2,798.73 and 1,378.74 is: 2,065.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.98 : 2,798.73 = 1,378.74 : x
  2. Step 2: Convert to fraction form
    1,867.98/2,798.73 = 1,378.74/x
  3. Step 3: Cross multiply
    1,867.98x = 2,798.73 × 1,378.74
  4. Step 4: Simplify right side
    1,867.98x = 3,858,721.00
  5. Step 5: Solve for x
    x = 3,858,721.00/1,867.98
  6. Step 6: Final answer
    x = 2,065.72

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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.