Home / 1,986.34-2,740.74-1,147.03

Finding the Fourth Proportional to 1,986.34, 2,740.74 and 1,147.03

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Solution

The fourth proportional to 1,986.34, 2,740.74 and 1,147.03 is: 1,582.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.34 : 2,740.74 = 1,147.03 : x
  2. Step 2: Convert to fraction form
    1,986.34/2,740.74 = 1,147.03/x
  3. Step 3: Cross multiply
    1,986.34x = 2,740.74 × 1,147.03
  4. Step 4: Simplify right side
    1,986.34x = 3,143,711.00
  5. Step 5: Solve for x
    x = 3,143,711.00/1,986.34
  6. Step 6: Final answer
    x = 1,582.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.