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Finding the Fourth Proportional to 8,762.37, 12,091.91 and 4,985.45

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Solution

The fourth proportional to 8,762.37, 12,091.91 and 4,985.45 is: 6,879.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.37 : 12,091.91 = 4,985.45 : x
  2. Step 2: Convert to fraction form
    8,762.37/12,091.91 = 4,985.45/x
  3. Step 3: Cross multiply
    8,762.37x = 12,091.91 × 4,985.45
  4. Step 4: Simplify right side
    8,762.37x = 60,283,624.73
  5. Step 5: Solve for x
    x = 60,283,624.73/8,762.37
  6. Step 6: Final answer
    x = 6,879.83

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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.