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Finding the Fourth Proportional to 5,305.45, 7,955.06 and 2,018.78

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Solution

The fourth proportional to 5,305.45, 7,955.06 and 2,018.78 is: 3,026.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,305.45 : 7,955.06 = 2,018.78 : x
  2. Step 2: Convert to fraction form
    5,305.45/7,955.06 = 2,018.78/x
  3. Step 3: Cross multiply
    5,305.45x = 7,955.06 × 2,018.78
  4. Step 4: Simplify right side
    5,305.45x = 16,059,516.03
  5. Step 5: Solve for x
    x = 16,059,516.03/5,305.45
  6. Step 6: Final answer
    x = 3,026.99

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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.