Home / 8,768.98-12,099.20-5,231.50

Finding the Fourth Proportional to 8,768.98, 12,099.20 and 5,231.50

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Solution

The fourth proportional to 8,768.98, 12,099.20 and 5,231.50 is: 7,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.98 : 12,099.20 = 5,231.50 : x
  2. Step 2: Convert to fraction form
    8,768.98/12,099.20 = 5,231.50/x
  3. Step 3: Cross multiply
    8,768.98x = 12,099.20 × 5,231.50
  4. Step 4: Simplify right side
    8,768.98x = 63,296,964.80
  5. Step 5: Solve for x
    x = 63,296,964.80/8,768.98
  6. Step 6: Final answer
    x = 7,218.28

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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.