Home / 5,121.24-7,680.24-2,897.34

Finding the Fourth Proportional to 5,121.24, 7,680.24 and 2,897.34

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Solution

The fourth proportional to 5,121.24, 7,680.24 and 2,897.34 is: 4,345.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.24 : 7,680.24 = 2,897.34 : x
  2. Step 2: Convert to fraction form
    5,121.24/7,680.24 = 2,897.34/x
  3. Step 3: Cross multiply
    5,121.24x = 7,680.24 × 2,897.34
  4. Step 4: Simplify right side
    5,121.24x = 22,252,266.56
  5. Step 5: Solve for x
    x = 22,252,266.56/5,121.24
  6. Step 6: Final answer
    x = 4,345.09

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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.