Home / 8,603.14-12,905.31-3,409

Finding the Fourth Proportional to 8,603.14, 12,905.31 and 3,409

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Solution

The fourth proportional to 8,603.14, 12,905.31 and 3,409 is: 5,113.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.14 : 12,905.31 = 3,409 : x
  2. Step 2: Convert to fraction form
    8,603.14/12,905.31 = 3,409/x
  3. Step 3: Cross multiply
    8,603.14x = 12,905.31 × 3,409
  4. Step 4: Simplify right side
    8,603.14x = 43,994,201.79
  5. Step 5: Solve for x
    x = 43,994,201.79/8,603.14
  6. Step 6: Final answer
    x = 5,113.74

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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.