Home / 1,946.41-2,686.04-1,247.78

Finding the Fourth Proportional to 1,946.41, 2,686.04 and 1,247.78

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Solution

The fourth proportional to 1,946.41, 2,686.04 and 1,247.78 is: 1,721.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.41 : 2,686.04 = 1,247.78 : x
  2. Step 2: Convert to fraction form
    1,946.41/2,686.04 = 1,247.78/x
  3. Step 3: Cross multiply
    1,946.41x = 2,686.04 × 1,247.78
  4. Step 4: Simplify right side
    1,946.41x = 3,351,586.99
  5. Step 5: Solve for x
    x = 3,351,586.99/1,946.41
  6. Step 6: Final answer
    x = 1,721.93

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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.