Home / 2,986.40-4,483.20-2,964.80

Finding the Fourth Proportional to 2,986.40, 4,483.20 and 2,964.80

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Solution

The fourth proportional to 2,986.40, 4,483.20 and 2,964.80 is: 4,450.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.40 : 4,483.20 = 2,964.80 : x
  2. Step 2: Convert to fraction form
    2,986.40/4,483.20 = 2,964.80/x
  3. Step 3: Cross multiply
    2,986.40x = 4,483.20 × 2,964.80
  4. Step 4: Simplify right side
    2,986.40x = 13,291,791.36
  5. Step 5: Solve for x
    x = 13,291,791.36/2,986.40
  6. Step 6: Final answer
    x = 4,450.77

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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.