Home / 1,986.80-2,975.72-1,595.44

Finding the Fourth Proportional to 1,986.80, 2,975.72 and 1,595.44

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Solution

The fourth proportional to 1,986.80, 2,975.72 and 1,595.44 is: 2,389.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.80 : 2,975.72 = 1,595.44 : x
  2. Step 2: Convert to fraction form
    1,986.80/2,975.72 = 1,595.44/x
  3. Step 3: Cross multiply
    1,986.80x = 2,975.72 × 1,595.44
  4. Step 4: Simplify right side
    1,986.80x = 4,747,582.72
  5. Step 5: Solve for x
    x = 4,747,582.72/1,986.80
  6. Step 6: Final answer
    x = 2,389.56

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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.