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Finding the Fourth Proportional to 3,435.30, 5,152.95 and 838.22

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Solution

The fourth proportional to 3,435.30, 5,152.95 and 838.22 is: 1,257.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,435.30 : 5,152.95 = 838.22 : x
  2. Step 2: Convert to fraction form
    3,435.30/5,152.95 = 838.22/x
  3. Step 3: Cross multiply
    3,435.30x = 5,152.95 × 838.22
  4. Step 4: Simplify right side
    3,435.30x = 4,319,279.98
  5. Step 5: Solve for x
    x = 4,319,279.98/3,435.30
  6. Step 6: Final answer
    x = 1,257.32

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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.