Home / 1,928.28-2,890.98-1,159.32

Finding the Fourth Proportional to 1,928.28, 2,890.98 and 1,159.32

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Solution

The fourth proportional to 1,928.28, 2,890.98 and 1,159.32 is: 1,738.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.28 : 2,890.98 = 1,159.32 : x
  2. Step 2: Convert to fraction form
    1,928.28/2,890.98 = 1,159.32/x
  3. Step 3: Cross multiply
    1,928.28x = 2,890.98 × 1,159.32
  4. Step 4: Simplify right side
    1,928.28x = 3,351,570.93
  5. Step 5: Solve for x
    x = 3,351,570.93/1,928.28
  6. Step 6: Final answer
    x = 1,738.11

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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.