Home / 3,078.60-4,617.92-1,130.80

Finding the Fourth Proportional to 3,078.60, 4,617.92 and 1,130.80

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Solution

The fourth proportional to 3,078.60, 4,617.92 and 1,130.80 is: 1,696.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.60 : 4,617.92 = 1,130.80 : x
  2. Step 2: Convert to fraction form
    3,078.60/4,617.92 = 1,130.80/x
  3. Step 3: Cross multiply
    3,078.60x = 4,617.92 × 1,130.80
  4. Step 4: Simplify right side
    3,078.60x = 5,221,943.94
  5. Step 5: Solve for x
    x = 5,221,943.94/3,078.60
  6. Step 6: Final answer
    x = 1,696.21

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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.