Home / 8,818.56-13,217.76-3,618

Finding the Fourth Proportional to 8,818.56, 13,217.76 and 3,618

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Solution

The fourth proportional to 8,818.56, 13,217.76 and 3,618 is: 5,422.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818.56 : 13,217.76 = 3,618 : x
  2. Step 2: Convert to fraction form
    8,818.56/13,217.76 = 3,618/x
  3. Step 3: Cross multiply
    8,818.56x = 13,217.76 × 3,618
  4. Step 4: Simplify right side
    8,818.56x = 47,821,855.68
  5. Step 5: Solve for x
    x = 47,821,855.68/8,818.56
  6. Step 6: Final answer
    x = 5,422.86

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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.