Home / 4,005.76-6,008.64-1,408.09

Finding the Fourth Proportional to 4,005.76, 6,008.64 and 1,408.09

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Solution

The fourth proportional to 4,005.76, 6,008.64 and 1,408.09 is: 2,112.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,005.76 : 6,008.64 = 1,408.09 : x
  2. Step 2: Convert to fraction form
    4,005.76/6,008.64 = 1,408.09/x
  3. Step 3: Cross multiply
    4,005.76x = 6,008.64 × 1,408.09
  4. Step 4: Simplify right side
    4,005.76x = 8,460,705.90
  5. Step 5: Solve for x
    x = 8,460,705.90/4,005.76
  6. Step 6: Final answer
    x = 2,112.14

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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.