Home / 8,147.16-11,235.24-5,157.54

Finding the Fourth Proportional to 8,147.16, 11,235.24 and 5,157.54

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Solution

The fourth proportional to 8,147.16, 11,235.24 and 5,157.54 is: 7,112.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.16 : 11,235.24 = 5,157.54 : x
  2. Step 2: Convert to fraction form
    8,147.16/11,235.24 = 5,157.54/x
  3. Step 3: Cross multiply
    8,147.16x = 11,235.24 × 5,157.54
  4. Step 4: Simplify right side
    8,147.16x = 57,946,199.71
  5. Step 5: Solve for x
    x = 57,946,199.71/8,147.16
  6. Step 6: Final answer
    x = 7,112.44

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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.