Home / 3,012.60-4,518.90-1,284.60

Finding the Fourth Proportional to 3,012.60, 4,518.90 and 1,284.60

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Solution

The fourth proportional to 3,012.60, 4,518.90 and 1,284.60 is: 1,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.60 : 4,518.90 = 1,284.60 : x
  2. Step 2: Convert to fraction form
    3,012.60/4,518.90 = 1,284.60/x
  3. Step 3: Cross multiply
    3,012.60x = 4,518.90 × 1,284.60
  4. Step 4: Simplify right side
    3,012.60x = 5,804,978.94
  5. Step 5: Solve for x
    x = 5,804,978.94/3,012.60
  6. Step 6: Final answer
    x = 1,926.90

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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.