Home / 5,278.63-7,917.95-1,815.88

Finding the Fourth Proportional to 5,278.63, 7,917.95 and 1,815.88

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Solution

The fourth proportional to 5,278.63, 7,917.95 and 1,815.88 is: 2,723.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.63 : 7,917.95 = 1,815.88 : x
  2. Step 2: Convert to fraction form
    5,278.63/7,917.95 = 1,815.88/x
  3. Step 3: Cross multiply
    5,278.63x = 7,917.95 × 1,815.88
  4. Step 4: Simplify right side
    5,278.63x = 14,378,047.05
  5. Step 5: Solve for x
    x = 14,378,047.05/5,278.63
  6. Step 6: Final answer
    x = 2,723.82

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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.