Home / 3,078.28-4,618.12-1,130.48

Finding the Fourth Proportional to 3,078.28, 4,618.12 and 1,130.48

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Solution

The fourth proportional to 3,078.28, 4,618.12 and 1,130.48 is: 1,695.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.28 : 4,618.12 = 1,130.48 : x
  2. Step 2: Convert to fraction form
    3,078.28/4,618.12 = 1,130.48/x
  3. Step 3: Cross multiply
    3,078.28x = 4,618.12 × 1,130.48
  4. Step 4: Simplify right side
    3,078.28x = 5,220,692.30
  5. Step 5: Solve for x
    x = 5,220,692.30/3,078.28
  6. Step 6: Final answer
    x = 1,695.98

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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.