Home / 3,138.06-4,706.64-1,406.28

Finding the Fourth Proportional to 3,138.06, 4,706.64 and 1,406.28

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Solution

The fourth proportional to 3,138.06, 4,706.64 and 1,406.28 is: 2,109.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.06 : 4,706.64 = 1,406.28 : x
  2. Step 2: Convert to fraction form
    3,138.06/4,706.64 = 1,406.28/x
  3. Step 3: Cross multiply
    3,138.06x = 4,706.64 × 1,406.28
  4. Step 4: Simplify right side
    3,138.06x = 6,618,853.70
  5. Step 5: Solve for x
    x = 6,618,853.70/3,138.06
  6. Step 6: Final answer
    x = 2,109.22

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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.