Home / 3,980.80-5,973.81-1,515.65

Finding the Fourth Proportional to 3,980.80, 5,973.81 and 1,515.65

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Solution

The fourth proportional to 3,980.80, 5,973.81 and 1,515.65 is: 2,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.80 : 5,973.81 = 1,515.65 : x
  2. Step 2: Convert to fraction form
    3,980.80/5,973.81 = 1,515.65/x
  3. Step 3: Cross multiply
    3,980.80x = 5,973.81 × 1,515.65
  4. Step 4: Simplify right side
    3,980.80x = 9,054,167.68
  5. Step 5: Solve for x
    x = 9,054,167.68/3,980.80
  6. Step 6: Final answer
    x = 2,274.46

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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.