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Finding the Fourth Proportional to 5,348, 7,380.24 and 3,485

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Solution

The fourth proportional to 5,348, 7,380.24 and 3,485 is: 4,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,348 : 7,380.24 = 3,485 : x
  2. Step 2: Convert to fraction form
    5,348/7,380.24 = 3,485/x
  3. Step 3: Cross multiply
    5,348x = 7,380.24 × 3,485
  4. Step 4: Simplify right side
    5,348x = 25,720,136.40
  5. Step 5: Solve for x
    x = 25,720,136.40/5,348
  6. Step 6: Final answer
    x = 4,809.30

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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.