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Finding the Fourth Proportional to 5,310.54, 7,328.21 and 3,321

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Solution

The fourth proportional to 5,310.54, 7,328.21 and 3,321 is: 4,582.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,310.54 : 7,328.21 = 3,321 : x
  2. Step 2: Convert to fraction form
    5,310.54/7,328.21 = 3,321/x
  3. Step 3: Cross multiply
    5,310.54x = 7,328.21 × 3,321
  4. Step 4: Simplify right side
    5,310.54x = 24,336,968.81
  5. Step 5: Solve for x
    x = 24,336,968.81/5,310.54
  6. Step 6: Final answer
    x = 4,582.77

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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.