Home / 1,616.22-2,422.35-690.75

Finding the Fourth Proportional to 1,616.22, 2,422.35 and 690.75

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Solution

The fourth proportional to 1,616.22, 2,422.35 and 690.75 is: 1,035.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616.22 : 2,422.35 = 690.75 : x
  2. Step 2: Convert to fraction form
    1,616.22/2,422.35 = 690.75/x
  3. Step 3: Cross multiply
    1,616.22x = 2,422.35 × 690.75
  4. Step 4: Simplify right side
    1,616.22x = 1,673,238.26
  5. Step 5: Solve for x
    x = 1,673,238.26/1,616.22
  6. Step 6: Final answer
    x = 1,035.28

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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.