Home / 1,478.14-2,037.93-1,211.59

Finding the Fourth Proportional to 1,478.14, 2,037.93 and 1,211.59

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Solution

The fourth proportional to 1,478.14, 2,037.93 and 1,211.59 is: 1,670.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.14 : 2,037.93 = 1,211.59 : x
  2. Step 2: Convert to fraction form
    1,478.14/2,037.93 = 1,211.59/x
  3. Step 3: Cross multiply
    1,478.14x = 2,037.93 × 1,211.59
  4. Step 4: Simplify right side
    1,478.14x = 2,469,135.61
  5. Step 5: Solve for x
    x = 2,469,135.61/1,478.14
  6. Step 6: Final answer
    x = 1,670.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.