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Finding the Fourth Proportional to 8,615.42, 12,923.18 and 3,068.98

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Solution

The fourth proportional to 8,615.42, 12,923.18 and 3,068.98 is: 4,603.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.42 : 12,923.18 = 3,068.98 : x
  2. Step 2: Convert to fraction form
    8,615.42/12,923.18 = 3,068.98/x
  3. Step 3: Cross multiply
    8,615.42x = 12,923.18 × 3,068.98
  4. Step 4: Simplify right side
    8,615.42x = 39,660,944.81
  5. Step 5: Solve for x
    x = 39,660,944.81/8,615.42
  6. Step 6: Final answer
    x = 4,603.48

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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.