Home / 2,616.21-3,610.36-1,421.21

Finding the Fourth Proportional to 2,616.21, 3,610.36 and 1,421.21

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Solution

The fourth proportional to 2,616.21, 3,610.36 and 1,421.21 is: 1,961.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.21 : 3,610.36 = 1,421.21 : x
  2. Step 2: Convert to fraction form
    2,616.21/3,610.36 = 1,421.21/x
  3. Step 3: Cross multiply
    2,616.21x = 3,610.36 × 1,421.21
  4. Step 4: Simplify right side
    2,616.21x = 5,131,071.06
  5. Step 5: Solve for x
    x = 5,131,071.06/2,616.21
  6. Step 6: Final answer
    x = 1,961.26

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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.