Home / 3,012.24-4,518.36-1,978.79

Finding the Fourth Proportional to 3,012.24, 4,518.36 and 1,978.79

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Solution

The fourth proportional to 3,012.24, 4,518.36 and 1,978.79 is: 2,968.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.24 : 4,518.36 = 1,978.79 : x
  2. Step 2: Convert to fraction form
    3,012.24/4,518.36 = 1,978.79/x
  3. Step 3: Cross multiply
    3,012.24x = 4,518.36 × 1,978.79
  4. Step 4: Simplify right side
    3,012.24x = 8,940,862.99
  5. Step 5: Solve for x
    x = 8,940,862.99/3,012.24
  6. Step 6: Final answer
    x = 2,968.18

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1.5x scale

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.