Home / 1,932.12-2,684.61-1,911.78

Finding the Fourth Proportional to 1,932.12, 2,684.61 and 1,911.78

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Solution

The fourth proportional to 1,932.12, 2,684.61 and 1,911.78 is: 2,656.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,932.12 : 2,684.61 = 1,911.78 : x
  2. Step 2: Convert to fraction form
    1,932.12/2,684.61 = 1,911.78/x
  3. Step 3: Cross multiply
    1,932.12x = 2,684.61 × 1,911.78
  4. Step 4: Simplify right side
    1,932.12x = 5,132,383.71
  5. Step 5: Solve for x
    x = 5,132,383.71/1,932.12
  6. Step 6: Final answer
    x = 2,656.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.