Home / 8,519.21-12,780.93-2,972.63

Finding the Fourth Proportional to 8,519.21, 12,780.93 and 2,972.63

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Solution

The fourth proportional to 8,519.21, 12,780.93 and 2,972.63 is: 4,459.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.21 : 12,780.93 = 2,972.63 : x
  2. Step 2: Convert to fraction form
    8,519.21/12,780.93 = 2,972.63/x
  3. Step 3: Cross multiply
    8,519.21x = 12,780.93 × 2,972.63
  4. Step 4: Simplify right side
    8,519.21x = 37,992,975.95
  5. Step 5: Solve for x
    x = 37,992,975.95/8,519.21
  6. Step 6: Final answer
    x = 4,459.68

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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.