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Finding the Fourth Proportional to 4,718.64, 7,072.40 and 1,943.94

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Solution

The fourth proportional to 4,718.64, 7,072.40 and 1,943.94 is: 2,913.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,718.64 : 7,072.40 = 1,943.94 : x
  2. Step 2: Convert to fraction form
    4,718.64/7,072.40 = 1,943.94/x
  3. Step 3: Cross multiply
    4,718.64x = 7,072.40 × 1,943.94
  4. Step 4: Simplify right side
    4,718.64x = 13,748,321.26
  5. Step 5: Solve for x
    x = 13,748,321.26/4,718.64
  6. Step 6: Final answer
    x = 2,913.62

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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.