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Finding the Fourth Proportional to 1,676.64, 2,512.94 and 1,264.40

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Solution

The fourth proportional to 1,676.64, 2,512.94 and 1,264.40 is: 1,895.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.64 : 2,512.94 = 1,264.40 : x
  2. Step 2: Convert to fraction form
    1,676.64/2,512.94 = 1,264.40/x
  3. Step 3: Cross multiply
    1,676.64x = 2,512.94 × 1,264.40
  4. Step 4: Simplify right side
    1,676.64x = 3,177,361.34
  5. Step 5: Solve for x
    x = 3,177,361.34/1,676.64
  6. Step 6: Final answer
    x = 1,895.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.