Home / 3,138.10-4,708.06-1,406.32

Finding the Fourth Proportional to 3,138.10, 4,708.06 and 1,406.32

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Solution

The fourth proportional to 3,138.10, 4,708.06 and 1,406.32 is: 2,109.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.10 : 4,708.06 = 1,406.32 : x
  2. Step 2: Convert to fraction form
    3,138.10/4,708.06 = 1,406.32/x
  3. Step 3: Cross multiply
    3,138.10x = 4,708.06 × 1,406.32
  4. Step 4: Simplify right side
    3,138.10x = 6,621,038.94
  5. Step 5: Solve for x
    x = 6,621,038.94/3,138.10
  6. Step 6: Final answer
    x = 2,109.89

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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.