Home / 8,518.06-12,777.70-2,972.80

Finding the Fourth Proportional to 8,518.06, 12,777.70 and 2,972.80

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Solution

The fourth proportional to 8,518.06, 12,777.70 and 2,972.80 is: 4,459.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.06 : 12,777.70 = 2,972.80 : x
  2. Step 2: Convert to fraction form
    8,518.06/12,777.70 = 2,972.80/x
  3. Step 3: Cross multiply
    8,518.06x = 12,777.70 × 2,972.80
  4. Step 4: Simplify right side
    8,518.06x = 37,985,546.56
  5. Step 5: Solve for x
    x = 37,985,546.56/8,518.06
  6. Step 6: Final answer
    x = 4,459.41

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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.