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Finding the Fourth Proportional to 8,607.24, 12,912.48 and 2,762.28

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Solution

The fourth proportional to 8,607.24, 12,912.48 and 2,762.28 is: 4,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.24 : 12,912.48 = 2,762.28 : x
  2. Step 2: Convert to fraction form
    8,607.24/12,912.48 = 2,762.28/x
  3. Step 3: Cross multiply
    8,607.24x = 12,912.48 × 2,762.28
  4. Step 4: Simplify right side
    8,607.24x = 35,667,885.25
  5. Step 5: Solve for x
    x = 35,667,885.25/8,607.24
  6. Step 6: Final answer
    x = 4,143.94

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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.