Home / 3,120.67-4,679.18-2,135.00

Finding the Fourth Proportional to 3,120.67, 4,679.18 and 2,135.00

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Solution

The fourth proportional to 3,120.67, 4,679.18 and 2,135.00 is: 3,201.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.67 : 4,679.18 = 2,135.00 : x
  2. Step 2: Convert to fraction form
    3,120.67/4,679.18 = 2,135.00/x
  3. Step 3: Cross multiply
    3,120.67x = 4,679.18 × 2,135.00
  4. Step 4: Simplify right side
    3,120.67x = 9,990,050.32
  5. Step 5: Solve for x
    x = 9,990,050.32/3,120.67
  6. Step 6: Final answer
    x = 3,201.25

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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.