Home / 3,078.12-4,617.79-1,130.34

Finding the Fourth Proportional to 3,078.12, 4,617.79 and 1,130.34

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Solution

The fourth proportional to 3,078.12, 4,617.79 and 1,130.34 is: 1,695.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.12 : 4,617.79 = 1,130.34 : x
  2. Step 2: Convert to fraction form
    3,078.12/4,617.79 = 1,130.34/x
  3. Step 3: Cross multiply
    3,078.12x = 4,617.79 × 1,130.34
  4. Step 4: Simplify right side
    3,078.12x = 5,219,687.12
  5. Step 5: Solve for x
    x = 5,219,687.12/3,078.12
  6. Step 6: Final answer
    x = 1,695.74

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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.