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Finding the Fourth Proportional to 8,871.80, 13,307.70 and 4,190.27

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Solution

The fourth proportional to 8,871.80, 13,307.70 and 4,190.27 is: 6,285.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.80 : 13,307.70 = 4,190.27 : x
  2. Step 2: Convert to fraction form
    8,871.80/13,307.70 = 4,190.27/x
  3. Step 3: Cross multiply
    8,871.80x = 13,307.70 × 4,190.27
  4. Step 4: Simplify right side
    8,871.80x = 55,762,856.08
  5. Step 5: Solve for x
    x = 55,762,856.08/8,871.80
  6. Step 6: Final answer
    x = 6,285.41

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Similar ratio
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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.