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Finding the Fourth Proportional to 8,391.56, 12,586.53 and 2,548.22

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Solution

The fourth proportional to 8,391.56, 12,586.53 and 2,548.22 is: 3,822.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.56 : 12,586.53 = 2,548.22 : x
  2. Step 2: Convert to fraction form
    8,391.56/12,586.53 = 2,548.22/x
  3. Step 3: Cross multiply
    8,391.56x = 12,586.53 × 2,548.22
  4. Step 4: Simplify right side
    8,391.56x = 32,073,247.48
  5. Step 5: Solve for x
    x = 32,073,247.48/8,391.56
  6. Step 6: Final answer
    x = 3,822.08

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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.