Home / 3,518.10-5,279.18-1,328.36

Finding the Fourth Proportional to 3,518.10, 5,279.18 and 1,328.36

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Solution

The fourth proportional to 3,518.10, 5,279.18 and 1,328.36 is: 1,993.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.10 : 5,279.18 = 1,328.36 : x
  2. Step 2: Convert to fraction form
    3,518.10/5,279.18 = 1,328.36/x
  3. Step 3: Cross multiply
    3,518.10x = 5,279.18 × 1,328.36
  4. Step 4: Simplify right side
    3,518.10x = 7,012,651.54
  5. Step 5: Solve for x
    x = 7,012,651.54/3,518.10
  6. Step 6: Final answer
    x = 1,993.31

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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.