Home / 2,077.21-2,866.67-1,378.09

Finding the Fourth Proportional to 2,077.21, 2,866.67 and 1,378.09

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Solution

The fourth proportional to 2,077.21, 2,866.67 and 1,378.09 is: 1,901.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.21 : 2,866.67 = 1,378.09 : x
  2. Step 2: Convert to fraction form
    2,077.21/2,866.67 = 1,378.09/x
  3. Step 3: Cross multiply
    2,077.21x = 2,866.67 × 1,378.09
  4. Step 4: Simplify right side
    2,077.21x = 3,950,529.26
  5. Step 5: Solve for x
    x = 3,950,529.26/2,077.21
  6. Step 6: Final answer
    x = 1,901.84

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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.