Home / 8,525.12-11,760.88-4,986.78

Finding the Fourth Proportional to 8,525.12, 11,760.88 and 4,986.78

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Solution

The fourth proportional to 8,525.12, 11,760.88 and 4,986.78 is: 6,879.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,525.12 : 11,760.88 = 4,986.78 : x
  2. Step 2: Convert to fraction form
    8,525.12/11,760.88 = 4,986.78/x
  3. Step 3: Cross multiply
    8,525.12x = 11,760.88 × 4,986.78
  4. Step 4: Simplify right side
    8,525.12x = 58,648,921.17
  5. Step 5: Solve for x
    x = 58,648,921.17/8,525.12
  6. Step 6: Final answer
    x = 6,879.54

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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.