Home / 8,254.21-12,378.81-2,988.58

Finding the Fourth Proportional to 8,254.21, 12,378.81 and 2,988.58

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Solution

The fourth proportional to 8,254.21, 12,378.81 and 2,988.58 is: 4,481.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,254.21 : 12,378.81 = 2,988.58 : x
  2. Step 2: Convert to fraction form
    8,254.21/12,378.81 = 2,988.58/x
  3. Step 3: Cross multiply
    8,254.21x = 12,378.81 × 2,988.58
  4. Step 4: Simplify right side
    8,254.21x = 36,995,063.99
  5. Step 5: Solve for x
    x = 36,995,063.99/8,254.21
  6. Step 6: Final answer
    x = 4,481.96

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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.