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Finding the Fourth Proportional to 5,012.94, 7,512.12 and 2,638.86

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Solution

The fourth proportional to 5,012.94, 7,512.12 and 2,638.86 is: 3,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,012.94 : 7,512.12 = 2,638.86 : x
  2. Step 2: Convert to fraction form
    5,012.94/7,512.12 = 2,638.86/x
  3. Step 3: Cross multiply
    5,012.94x = 7,512.12 × 2,638.86
  4. Step 4: Simplify right side
    5,012.94x = 19,823,432.98
  5. Step 5: Solve for x
    x = 19,823,432.98/5,012.94
  6. Step 6: Final answer
    x = 3,954.45

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1.5x scale

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.