Home / 1,986.30-2,980.26-1,595.88

Finding the Fourth Proportional to 1,986.30, 2,980.26 and 1,595.88

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Solution

The fourth proportional to 1,986.30, 2,980.26 and 1,595.88 is: 2,394.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.30 : 2,980.26 = 1,595.88 : x
  2. Step 2: Convert to fraction form
    1,986.30/2,980.26 = 1,595.88/x
  3. Step 3: Cross multiply
    1,986.30x = 2,980.26 × 1,595.88
  4. Step 4: Simplify right side
    1,986.30x = 4,756,137.33
  5. Step 5: Solve for x
    x = 4,756,137.33/1,986.30
  6. Step 6: Final answer
    x = 2,394.47

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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.