Home / 2,908.60-4,012.98-1,729.78

Finding the Fourth Proportional to 2,908.60, 4,012.98 and 1,729.78

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Solution

The fourth proportional to 2,908.60, 4,012.98 and 1,729.78 is: 2,386.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.60 : 4,012.98 = 1,729.78 : x
  2. Step 2: Convert to fraction form
    2,908.60/4,012.98 = 1,729.78/x
  3. Step 3: Cross multiply
    2,908.60x = 4,012.98 × 1,729.78
  4. Step 4: Simplify right side
    2,908.60x = 6,941,572.54
  5. Step 5: Solve for x
    x = 6,941,572.54/2,908.60
  6. Step 6: Final answer
    x = 2,386.57

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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.