Home / 1,928.45-2,660.55-1,265.68

Finding the Fourth Proportional to 1,928.45, 2,660.55 and 1,265.68

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Solution

The fourth proportional to 1,928.45, 2,660.55 and 1,265.68 is: 1,746.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.45 : 2,660.55 = 1,265.68 : x
  2. Step 2: Convert to fraction form
    1,928.45/2,660.55 = 1,265.68/x
  3. Step 3: Cross multiply
    1,928.45x = 2,660.55 × 1,265.68
  4. Step 4: Simplify right side
    1,928.45x = 3,367,404.92
  5. Step 5: Solve for x
    x = 3,367,404.92/1,928.45
  6. Step 6: Final answer
    x = 1,746.17

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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.