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Finding the Fourth Proportional to 8,603.63, 12,905.58 and 3,923.45

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Solution

The fourth proportional to 8,603.63, 12,905.58 and 3,923.45 is: 5,885.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.63 : 12,905.58 = 3,923.45 : x
  2. Step 2: Convert to fraction form
    8,603.63/12,905.58 = 3,923.45/x
  3. Step 3: Cross multiply
    8,603.63x = 12,905.58 × 3,923.45
  4. Step 4: Simplify right side
    8,603.63x = 50,634,397.85
  5. Step 5: Solve for x
    x = 50,634,397.85/8,603.63
  6. Step 6: Final answer
    x = 5,885.24

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Similar ratio
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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.