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Finding the Fourth Proportional to 2,145.64, 2,961.04 and 1,214.16

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Solution

The fourth proportional to 2,145.64, 2,961.04 and 1,214.16 is: 1,675.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.64 : 2,961.04 = 1,214.16 : x
  2. Step 2: Convert to fraction form
    2,145.64/2,961.04 = 1,214.16/x
  3. Step 3: Cross multiply
    2,145.64x = 2,961.04 × 1,214.16
  4. Step 4: Simplify right side
    2,145.64x = 3,595,176.33
  5. Step 5: Solve for x
    x = 3,595,176.33/2,145.64
  6. Step 6: Final answer
    x = 1,675.57

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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.