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Finding the Fourth Proportional to 8,724.52, 12,039.86 and 4,745.63

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Solution

The fourth proportional to 8,724.52, 12,039.86 and 4,745.63 is: 6,548.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,724.52 : 12,039.86 = 4,745.63 : x
  2. Step 2: Convert to fraction form
    8,724.52/12,039.86 = 4,745.63/x
  3. Step 3: Cross multiply
    8,724.52x = 12,039.86 × 4,745.63
  4. Step 4: Simplify right side
    8,724.52x = 57,136,762.78
  5. Step 5: Solve for x
    x = 57,136,762.78/8,724.52
  6. Step 6: Final answer
    x = 6,548.99

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1.5x scale

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.