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Finding the Fourth Proportional to 8,245.93, 12,369.47 and 3,315.57

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Solution

The fourth proportional to 8,245.93, 12,369.47 and 3,315.57 is: 4,973.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,245.93 : 12,369.47 = 3,315.57 : x
  2. Step 2: Convert to fraction form
    8,245.93/12,369.47 = 3,315.57/x
  3. Step 3: Cross multiply
    8,245.93x = 12,369.47 × 3,315.57
  4. Step 4: Simplify right side
    8,245.93x = 41,011,827.07
  5. Step 5: Solve for x
    x = 41,011,827.07/8,245.93
  6. Step 6: Final answer
    x = 4,973.59

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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.