Home / 1,830.45-2,738.79-1,215.66

Finding the Fourth Proportional to 1,830.45, 2,738.79 and 1,215.66

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Solution

The fourth proportional to 1,830.45, 2,738.79 and 1,215.66 is: 1,818.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.45 : 2,738.79 = 1,215.66 : x
  2. Step 2: Convert to fraction form
    1,830.45/2,738.79 = 1,215.66/x
  3. Step 3: Cross multiply
    1,830.45x = 2,738.79 × 1,215.66
  4. Step 4: Simplify right side
    1,830.45x = 3,329,437.45
  5. Step 5: Solve for x
    x = 3,329,437.45/1,830.45
  6. Step 6: Final answer
    x = 1,818.92

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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.