Home / 2,125.24-3,185.54-1,395.32

Finding the Fourth Proportional to 2,125.24, 3,185.54 and 1,395.32

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Solution

The fourth proportional to 2,125.24, 3,185.54 and 1,395.32 is: 2,091.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.24 : 3,185.54 = 1,395.32 : x
  2. Step 2: Convert to fraction form
    2,125.24/3,185.54 = 1,395.32/x
  3. Step 3: Cross multiply
    2,125.24x = 3,185.54 × 1,395.32
  4. Step 4: Simplify right side
    2,125.24x = 4,444,847.67
  5. Step 5: Solve for x
    x = 4,444,847.67/2,125.24
  6. Step 6: Final answer
    x = 2,091.46

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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.