Home / 5,138.51-7,707.83-1,851.53

Finding the Fourth Proportional to 5,138.51, 7,707.83 and 1,851.53

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Solution

The fourth proportional to 5,138.51, 7,707.83 and 1,851.53 is: 2,777.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.51 : 7,707.83 = 1,851.53 : x
  2. Step 2: Convert to fraction form
    5,138.51/7,707.83 = 1,851.53/x
  3. Step 3: Cross multiply
    5,138.51x = 7,707.83 × 1,851.53
  4. Step 4: Simplify right side
    5,138.51x = 14,271,230.68
  5. Step 5: Solve for x
    x = 14,271,230.68/5,138.51
  6. Step 6: Final answer
    x = 2,777.31

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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.