Home / 8,139.78-11,234.34-4,782.59

Finding the Fourth Proportional to 8,139.78, 11,234.34 and 4,782.59

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Solution

The fourth proportional to 8,139.78, 11,234.34 and 4,782.59 is: 6,600.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.78 : 11,234.34 = 4,782.59 : x
  2. Step 2: Convert to fraction form
    8,139.78/11,234.34 = 4,782.59/x
  3. Step 3: Cross multiply
    8,139.78x = 11,234.34 × 4,782.59
  4. Step 4: Simplify right side
    8,139.78x = 53,729,218.23
  5. Step 5: Solve for x
    x = 53,729,218.23/8,139.78
  6. Step 6: Final answer
    x = 6,600.82

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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.