Home / 1,432.77-1,977.66-1,238.37

Finding the Fourth Proportional to 1,432.77, 1,977.66 and 1,238.37

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Solution

The fourth proportional to 1,432.77, 1,977.66 and 1,238.37 is: 1,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.77 : 1,977.66 = 1,238.37 : x
  2. Step 2: Convert to fraction form
    1,432.77/1,977.66 = 1,238.37/x
  3. Step 3: Cross multiply
    1,432.77x = 1,977.66 × 1,238.37
  4. Step 4: Simplify right side
    1,432.77x = 2,449,074.81
  5. Step 5: Solve for x
    x = 2,449,074.81/1,432.77
  6. Step 6: Final answer
    x = 1,709.33

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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.