Home / 4,145.45-6,218.64-1,223.76

Finding the Fourth Proportional to 4,145.45, 6,218.64 and 1,223.76

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Solution

The fourth proportional to 4,145.45, 6,218.64 and 1,223.76 is: 1,835.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.45 : 6,218.64 = 1,223.76 : x
  2. Step 2: Convert to fraction form
    4,145.45/6,218.64 = 1,223.76/x
  3. Step 3: Cross multiply
    4,145.45x = 6,218.64 × 1,223.76
  4. Step 4: Simplify right side
    4,145.45x = 7,610,122.89
  5. Step 5: Solve for x
    x = 7,610,122.89/4,145.45
  6. Step 6: Final answer
    x = 1,835.78

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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.