Home / 1,928.61-2,888.70-1,185.96

Finding the Fourth Proportional to 1,928.61, 2,888.70 and 1,185.96

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Solution

The fourth proportional to 1,928.61, 2,888.70 and 1,185.96 is: 1,776.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.61 : 2,888.70 = 1,185.96 : x
  2. Step 2: Convert to fraction form
    1,928.61/2,888.70 = 1,185.96/x
  3. Step 3: Cross multiply
    1,928.61x = 2,888.70 × 1,185.96
  4. Step 4: Simplify right side
    1,928.61x = 3,425,882.65
  5. Step 5: Solve for x
    x = 3,425,882.65/1,928.61
  6. Step 6: Final answer
    x = 1,776.35

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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.