Home / 5,147.19-7,720.79-1,684.44

Finding the Fourth Proportional to 5,147.19, 7,720.79 and 1,684.44

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Solution

The fourth proportional to 5,147.19, 7,720.79 and 1,684.44 is: 2,526.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.19 : 7,720.79 = 1,684.44 : x
  2. Step 2: Convert to fraction form
    5,147.19/7,720.79 = 1,684.44/x
  3. Step 3: Cross multiply
    5,147.19x = 7,720.79 × 1,684.44
  4. Step 4: Simplify right side
    5,147.19x = 13,005,199.09
  5. Step 5: Solve for x
    x = 13,005,199.09/5,147.19
  6. Step 6: Final answer
    x = 2,526.66

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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.