Home / 8,145.12-11,239.68-4,608.72

Finding the Fourth Proportional to 8,145.12, 11,239.68 and 4,608.72

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Solution

The fourth proportional to 8,145.12, 11,239.68 and 4,608.72 is: 6,359.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.12 : 11,239.68 = 4,608.72 : x
  2. Step 2: Convert to fraction form
    8,145.12/11,239.68 = 4,608.72/x
  3. Step 3: Cross multiply
    8,145.12x = 11,239.68 × 4,608.72
  4. Step 4: Simplify right side
    8,145.12x = 51,800,538.01
  5. Step 5: Solve for x
    x = 51,800,538.01/8,145.12
  6. Step 6: Final answer
    x = 6,359.70

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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.