Home / 2,181.27-3,009.10-1,296.45

Finding the Fourth Proportional to 2,181.27, 3,009.10 and 1,296.45

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Solution

The fourth proportional to 2,181.27, 3,009.10 and 1,296.45 is: 1,788.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.27 : 3,009.10 = 1,296.45 : x
  2. Step 2: Convert to fraction form
    2,181.27/3,009.10 = 1,296.45/x
  3. Step 3: Cross multiply
    2,181.27x = 3,009.10 × 1,296.45
  4. Step 4: Simplify right side
    2,181.27x = 3,901,141.21
  5. Step 5: Solve for x
    x = 3,901,141.21/2,181.27
  6. Step 6: Final answer
    x = 1,788.47

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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.