Home / 5,151.78-7,108.81-3,055.50

Finding the Fourth Proportional to 5,151.78, 7,108.81 and 3,055.50

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Solution

The fourth proportional to 5,151.78, 7,108.81 and 3,055.50 is: 4,216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.78 : 7,108.81 = 3,055.50 : x
  2. Step 2: Convert to fraction form
    5,151.78/7,108.81 = 3,055.50/x
  3. Step 3: Cross multiply
    5,151.78x = 7,108.81 × 3,055.50
  4. Step 4: Simplify right side
    5,151.78x = 21,720,968.96
  5. Step 5: Solve for x
    x = 21,720,968.96/5,151.78
  6. Step 6: Final answer
    x = 4,216.21

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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.