Home / 3,078.34-4,614.75-1,129.18

Finding the Fourth Proportional to 3,078.34, 4,614.75 and 1,129.18

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Solution

The fourth proportional to 3,078.34, 4,614.75 and 1,129.18 is: 1,692.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.34 : 4,614.75 = 1,129.18 : x
  2. Step 2: Convert to fraction form
    3,078.34/4,614.75 = 1,129.18/x
  3. Step 3: Cross multiply
    3,078.34x = 4,614.75 × 1,129.18
  4. Step 4: Simplify right side
    3,078.34x = 5,210,883.41
  5. Step 5: Solve for x
    x = 5,210,883.41/3,078.34
  6. Step 6: Final answer
    x = 1,692.76

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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.