Home / 1,911.32-2,635.44-1,616.12

Finding the Fourth Proportional to 1,911.32, 2,635.44 and 1,616.12

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Solution

The fourth proportional to 1,911.32, 2,635.44 and 1,616.12 is: 2,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.32 : 2,635.44 = 1,616.12 : x
  2. Step 2: Convert to fraction form
    1,911.32/2,635.44 = 1,616.12/x
  3. Step 3: Cross multiply
    1,911.32x = 2,635.44 × 1,616.12
  4. Step 4: Simplify right side
    1,911.32x = 4,259,187.29
  5. Step 5: Solve for x
    x = 4,259,187.29/1,911.32
  6. Step 6: Final answer
    x = 2,228.40

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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.