Home / 8,151.33-11,255.73-5,172.45

Finding the Fourth Proportional to 8,151.33, 11,255.73 and 5,172.45

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Solution

The fourth proportional to 8,151.33, 11,255.73 and 5,172.45 is: 7,142.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.33 : 11,255.73 = 5,172.45 : x
  2. Step 2: Convert to fraction form
    8,151.33/11,255.73 = 5,172.45/x
  3. Step 3: Cross multiply
    8,151.33x = 11,255.73 × 5,172.45
  4. Step 4: Simplify right side
    8,151.33x = 58,219,700.64
  5. Step 5: Solve for x
    x = 58,219,700.64/8,151.33
  6. Step 6: Final answer
    x = 7,142.36

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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.