Home / 3,218.76-4,830.58-2,122.76

Finding the Fourth Proportional to 3,218.76, 4,830.58 and 2,122.76

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Solution

The fourth proportional to 3,218.76, 4,830.58 and 2,122.76 is: 3,185.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.76 : 4,830.58 = 2,122.76 : x
  2. Step 2: Convert to fraction form
    3,218.76/4,830.58 = 2,122.76/x
  3. Step 3: Cross multiply
    3,218.76x = 4,830.58 × 2,122.76
  4. Step 4: Simplify right side
    3,218.76x = 10,254,162.00
  5. Step 5: Solve for x
    x = 10,254,162.00/3,218.76
  6. Step 6: Final answer
    x = 3,185.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.