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Finding the Fourth Proportional to 3,418.74, 4,718.05 and 1,926.72

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Solution

The fourth proportional to 3,418.74, 4,718.05 and 1,926.72 is: 2,658.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.74 : 4,718.05 = 1,926.72 : x
  2. Step 2: Convert to fraction form
    3,418.74/4,718.05 = 1,926.72/x
  3. Step 3: Cross multiply
    3,418.74x = 4,718.05 × 1,926.72
  4. Step 4: Simplify right side
    3,418.74x = 9,090,356.48
  5. Step 5: Solve for x
    x = 9,090,356.48/3,418.74
  6. Step 6: Final answer
    x = 2,658.98

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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.