Home / 8,505.95-11,735.51-5,147.69

Finding the Fourth Proportional to 8,505.95, 11,735.51 and 5,147.69

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Solution

The fourth proportional to 8,505.95, 11,735.51 and 5,147.69 is: 7,102.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.95 : 11,735.51 = 5,147.69 : x
  2. Step 2: Convert to fraction form
    8,505.95/11,735.51 = 5,147.69/x
  3. Step 3: Cross multiply
    8,505.95x = 11,735.51 × 5,147.69
  4. Step 4: Simplify right side
    8,505.95x = 60,410,771.07
  5. Step 5: Solve for x
    x = 60,410,771.07/8,505.95
  6. Step 6: Final answer
    x = 7,102.18

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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.