Home / 2,712.69-4,070.43-1,325.99

Finding the Fourth Proportional to 2,712.69, 4,070.43 and 1,325.99

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Solution

The fourth proportional to 2,712.69, 4,070.43 and 1,325.99 is: 1,989.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.69 : 4,070.43 = 1,325.99 : x
  2. Step 2: Convert to fraction form
    2,712.69/4,070.43 = 1,325.99/x
  3. Step 3: Cross multiply
    2,712.69x = 4,070.43 × 1,325.99
  4. Step 4: Simplify right side
    2,712.69x = 5,397,359.65
  5. Step 5: Solve for x
    x = 5,397,359.65/2,712.69
  6. Step 6: Final answer
    x = 1,989.67

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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.