Home / 3,518.80-5,262.36-3,131.08

Finding the Fourth Proportional to 3,518.80, 5,262.36 and 3,131.08

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Solution

The fourth proportional to 3,518.80, 5,262.36 and 3,131.08 is: 4,682.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.80 : 5,262.36 = 3,131.08 : x
  2. Step 2: Convert to fraction form
    3,518.80/5,262.36 = 3,131.08/x
  3. Step 3: Cross multiply
    3,518.80x = 5,262.36 × 3,131.08
  4. Step 4: Simplify right side
    3,518.80x = 16,476,870.15
  5. Step 5: Solve for x
    x = 16,476,870.15/3,518.80
  6. Step 6: Final answer
    x = 4,682.53

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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.