Home / 2,181.16-3,005.70-1,434.28

Finding the Fourth Proportional to 2,181.16, 3,005.70 and 1,434.28

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Solution

The fourth proportional to 2,181.16, 3,005.70 and 1,434.28 is: 1,976.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.16 : 3,005.70 = 1,434.28 : x
  2. Step 2: Convert to fraction form
    2,181.16/3,005.70 = 1,434.28/x
  3. Step 3: Cross multiply
    2,181.16x = 3,005.70 × 1,434.28
  4. Step 4: Simplify right side
    2,181.16x = 4,311,015.40
  5. Step 5: Solve for x
    x = 4,311,015.40/2,181.16
  6. Step 6: Final answer
    x = 1,976.48

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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.