Home / 2,181.16-3,009.56-1,284.66

Finding the Fourth Proportional to 2,181.16, 3,009.56 and 1,284.66

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Solution

The fourth proportional to 2,181.16, 3,009.56 and 1,284.66 is: 1,772.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.16 : 3,009.56 = 1,284.66 : x
  2. Step 2: Convert to fraction form
    2,181.16/3,009.56 = 1,284.66/x
  3. Step 3: Cross multiply
    2,181.16x = 3,009.56 × 1,284.66
  4. Step 4: Simplify right side
    2,181.16x = 3,866,254.93
  5. Step 5: Solve for x
    x = 3,866,254.93/2,181.16
  6. Step 6: Final answer
    x = 1,772.57

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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.