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Finding the Fourth Proportional to 8,861.61, 12,228.77 and 4,828.35

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Solution

The fourth proportional to 8,861.61, 12,228.77 and 4,828.35 is: 6,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.61 : 12,228.77 = 4,828.35 : x
  2. Step 2: Convert to fraction form
    8,861.61/12,228.77 = 4,828.35/x
  3. Step 3: Cross multiply
    8,861.61x = 12,228.77 × 4,828.35
  4. Step 4: Simplify right side
    8,861.61x = 59,044,757.49
  5. Step 5: Solve for x
    x = 59,044,757.49/8,861.61
  6. Step 6: Final answer
    x = 6,662.98

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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.