Home / 8,526.92-12,786.72-2,978.60

Finding the Fourth Proportional to 8,526.92, 12,786.72 and 2,978.60

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Solution

The fourth proportional to 8,526.92, 12,786.72 and 2,978.60 is: 4,466.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,526.92 : 12,786.72 = 2,978.60 : x
  2. Step 2: Convert to fraction form
    8,526.92/12,786.72 = 2,978.60/x
  3. Step 3: Cross multiply
    8,526.92x = 12,786.72 × 2,978.60
  4. Step 4: Simplify right side
    8,526.92x = 38,086,524.19
  5. Step 5: Solve for x
    x = 38,086,524.19/8,526.92
  6. Step 6: Final answer
    x = 4,466.62

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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.