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Finding the Fourth Proportional to 2,383.56, 3,291.84 and 2,187

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Solution

The fourth proportional to 2,383.56, 3,291.84 and 2,187 is: 3,020.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,383.56 : 3,291.84 = 2,187 : x
  2. Step 2: Convert to fraction form
    2,383.56/3,291.84 = 2,187/x
  3. Step 3: Cross multiply
    2,383.56x = 3,291.84 × 2,187
  4. Step 4: Simplify right side
    2,383.56x = 7,199,254.08
  5. Step 5: Solve for x
    x = 7,199,254.08/2,383.56
  6. Step 6: Final answer
    x = 3,020.38

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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.