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Finding the Fourth Proportional to 5,242.68, 7,235.88 and 3,981.48

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Solution

The fourth proportional to 5,242.68, 7,235.88 and 3,981.48 is: 5,495.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242.68 : 7,235.88 = 3,981.48 : x
  2. Step 2: Convert to fraction form
    5,242.68/7,235.88 = 3,981.48/x
  3. Step 3: Cross multiply
    5,242.68x = 7,235.88 × 3,981.48
  4. Step 4: Simplify right side
    5,242.68x = 28,809,511.50
  5. Step 5: Solve for x
    x = 28,809,511.50/5,242.68
  6. Step 6: Final answer
    x = 5,495.19

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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.