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Finding the Fourth Proportional to 5,173.52, 7,139.04 and 3,605

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Solution

The fourth proportional to 5,173.52, 7,139.04 and 3,605 is: 4,974.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.52 : 7,139.04 = 3,605 : x
  2. Step 2: Convert to fraction form
    5,173.52/7,139.04 = 3,605/x
  3. Step 3: Cross multiply
    5,173.52x = 7,139.04 × 3,605
  4. Step 4: Simplify right side
    5,173.52x = 25,736,239.20
  5. Step 5: Solve for x
    x = 25,736,239.20/5,173.52
  6. Step 6: Final answer
    x = 4,974.61

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1.5x scale

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.