Home / 2,285.73-3,153.87-1,290.65

Finding the Fourth Proportional to 2,285.73, 3,153.87 and 1,290.65

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Solution

The fourth proportional to 2,285.73, 3,153.87 and 1,290.65 is: 1,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.73 : 3,153.87 = 1,290.65 : x
  2. Step 2: Convert to fraction form
    2,285.73/3,153.87 = 1,290.65/x
  3. Step 3: Cross multiply
    2,285.73x = 3,153.87 × 1,290.65
  4. Step 4: Simplify right side
    2,285.73x = 4,070,526.55
  5. Step 5: Solve for x
    x = 4,070,526.55/2,285.73
  6. Step 6: Final answer
    x = 1,780.84

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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.