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Finding the Fourth Proportional to 8,404.95, 12,603.78 and 2,856.81

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Solution

The fourth proportional to 8,404.95, 12,603.78 and 2,856.81 is: 4,283.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,404.95 : 12,603.78 = 2,856.81 : x
  2. Step 2: Convert to fraction form
    8,404.95/12,603.78 = 2,856.81/x
  3. Step 3: Cross multiply
    8,404.95x = 12,603.78 × 2,856.81
  4. Step 4: Simplify right side
    8,404.95x = 36,006,548.34
  5. Step 5: Solve for x
    x = 36,006,548.34/8,404.95
  6. Step 6: Final answer
    x = 4,283.97

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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.