Home / 3,145.62-4,720.20-2,897.76

Finding the Fourth Proportional to 3,145.62, 4,720.20 and 2,897.76

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Solution

The fourth proportional to 3,145.62, 4,720.20 and 2,897.76 is: 4,348.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.62 : 4,720.20 = 2,897.76 : x
  2. Step 2: Convert to fraction form
    3,145.62/4,720.20 = 2,897.76/x
  3. Step 3: Cross multiply
    3,145.62x = 4,720.20 × 2,897.76
  4. Step 4: Simplify right side
    3,145.62x = 13,678,006.75
  5. Step 5: Solve for x
    x = 13,678,006.75/3,145.62
  6. Step 6: Final answer
    x = 4,348.27

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1.5x scale

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.