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Finding the Fourth Proportional to 5,615.79, 7,748.45 and 3,625.94

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Solution

The fourth proportional to 5,615.79, 7,748.45 and 3,625.94 is: 5,002.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.79 : 7,748.45 = 3,625.94 : x
  2. Step 2: Convert to fraction form
    5,615.79/7,748.45 = 3,625.94/x
  3. Step 3: Cross multiply
    5,615.79x = 7,748.45 × 3,625.94
  4. Step 4: Simplify right side
    5,615.79x = 28,095,377.29
  5. Step 5: Solve for x
    x = 28,095,377.29/5,615.79
  6. Step 6: Final answer
    x = 5,002.92

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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.