Home / 2,145.63-2,961.36-1,261.49

Finding the Fourth Proportional to 2,145.63, 2,961.36 and 1,261.49

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Solution

The fourth proportional to 2,145.63, 2,961.36 and 1,261.49 is: 1,741.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.63 : 2,961.36 = 1,261.49 : x
  2. Step 2: Convert to fraction form
    2,145.63/2,961.36 = 1,261.49/x
  3. Step 3: Cross multiply
    2,145.63x = 2,961.36 × 1,261.49
  4. Step 4: Simplify right side
    2,145.63x = 3,735,711.22
  5. Step 5: Solve for x
    x = 3,735,711.22/2,145.63
  6. Step 6: Final answer
    x = 1,741.08

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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.