Home / 5,146.88-7,720.40-1,449.19

Finding the Fourth Proportional to 5,146.88, 7,720.40 and 1,449.19

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Solution

The fourth proportional to 5,146.88, 7,720.40 and 1,449.19 is: 2,173.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.88 : 7,720.40 = 1,449.19 : x
  2. Step 2: Convert to fraction form
    5,146.88/7,720.40 = 1,449.19/x
  3. Step 3: Cross multiply
    5,146.88x = 7,720.40 × 1,449.19
  4. Step 4: Simplify right side
    5,146.88x = 11,188,319.23
  5. Step 5: Solve for x
    x = 11,188,319.23/5,146.88
  6. Step 6: Final answer
    x = 2,173.81

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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.