Home / 2,145.06-2,960.44-1,200.90

Finding the Fourth Proportional to 2,145.06, 2,960.44 and 1,200.90

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Solution

The fourth proportional to 2,145.06, 2,960.44 and 1,200.90 is: 1,657.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.06 : 2,960.44 = 1,200.90 : x
  2. Step 2: Convert to fraction form
    2,145.06/2,960.44 = 1,200.90/x
  3. Step 3: Cross multiply
    2,145.06x = 2,960.44 × 1,200.90
  4. Step 4: Simplify right side
    2,145.06x = 3,555,192.40
  5. Step 5: Solve for x
    x = 3,555,192.40/2,145.06
  6. Step 6: Final answer
    x = 1,657.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.