Home / 4,126.96-5,690.86-3,121.03

Finding the Fourth Proportional to 4,126.96, 5,690.86 and 3,121.03

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Solution

The fourth proportional to 4,126.96, 5,690.86 and 3,121.03 is: 4,303.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,126.96 : 5,690.86 = 3,121.03 : x
  2. Step 2: Convert to fraction form
    4,126.96/5,690.86 = 3,121.03/x
  3. Step 3: Cross multiply
    4,126.96x = 5,690.86 × 3,121.03
  4. Step 4: Simplify right side
    4,126.96x = 17,761,344.79
  5. Step 5: Solve for x
    x = 17,761,344.79/4,126.96
  6. Step 6: Final answer
    x = 4,303.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.