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Finding the Fourth Proportional to 3,521, 5,275.98 and 3,153.80

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Solution

The fourth proportional to 3,521, 5,275.98 and 3,153.80 is: 4,725.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521 : 5,275.98 = 3,153.80 : x
  2. Step 2: Convert to fraction form
    3,521/5,275.98 = 3,153.80/x
  3. Step 3: Cross multiply
    3,521x = 5,275.98 × 3,153.80
  4. Step 4: Simplify right side
    3,521x = 16,639,385.72
  5. Step 5: Solve for x
    x = 16,639,385.72/3,521
  6. Step 6: Final answer
    x = 4,725.76

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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.