Home / 2,035.78-2,808.14-1,289.46

Finding the Fourth Proportional to 2,035.78, 2,808.14 and 1,289.46

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Solution

The fourth proportional to 2,035.78, 2,808.14 and 1,289.46 is: 1,778.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,035.78 : 2,808.14 = 1,289.46 : x
  2. Step 2: Convert to fraction form
    2,035.78/2,808.14 = 1,289.46/x
  3. Step 3: Cross multiply
    2,035.78x = 2,808.14 × 1,289.46
  4. Step 4: Simplify right side
    2,035.78x = 3,620,984.20
  5. Step 5: Solve for x
    x = 3,620,984.20/2,035.78
  6. Step 6: Final answer
    x = 1,778.67

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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.