Home / 2,077.90-2,867.87-1,238.65

Finding the Fourth Proportional to 2,077.90, 2,867.87 and 1,238.65

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Solution

The fourth proportional to 2,077.90, 2,867.87 and 1,238.65 is: 1,709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.90 : 2,867.87 = 1,238.65 : x
  2. Step 2: Convert to fraction form
    2,077.90/2,867.87 = 1,238.65/x
  3. Step 3: Cross multiply
    2,077.90x = 2,867.87 × 1,238.65
  4. Step 4: Simplify right side
    2,077.90x = 3,552,292.27
  5. Step 5: Solve for x
    x = 3,552,292.27/2,077.90
  6. Step 6: Final answer
    x = 1,709.56

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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.