Home / 2,145.66-2,960.99-1,201.45

Finding the Fourth Proportional to 2,145.66, 2,960.99 and 1,201.45

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Solution

The fourth proportional to 2,145.66, 2,960.99 and 1,201.45 is: 1,657.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.66 : 2,960.99 = 1,201.45 : x
  2. Step 2: Convert to fraction form
    2,145.66/2,960.99 = 1,201.45/x
  3. Step 3: Cross multiply
    2,145.66x = 2,960.99 × 1,201.45
  4. Step 4: Simplify right side
    2,145.66x = 3,557,477.04
  5. Step 5: Solve for x
    x = 3,557,477.04/2,145.66
  6. Step 6: Final answer
    x = 1,657.99

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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.