Home / 1,986.04-2,970.11-1,517.65

Finding the Fourth Proportional to 1,986.04, 2,970.11 and 1,517.65

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Solution

The fourth proportional to 1,986.04, 2,970.11 and 1,517.65 is: 2,269.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.04 : 2,970.11 = 1,517.65 : x
  2. Step 2: Convert to fraction form
    1,986.04/2,970.11 = 1,517.65/x
  3. Step 3: Cross multiply
    1,986.04x = 2,970.11 × 1,517.65
  4. Step 4: Simplify right side
    1,986.04x = 4,507,587.44
  5. Step 5: Solve for x
    x = 4,507,587.44/1,986.04
  6. Step 6: Final answer
    x = 2,269.64

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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.