Home / 8,897.70-12,279.41-5,121.33

Finding the Fourth Proportional to 8,897.70, 12,279.41 and 5,121.33

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Solution

The fourth proportional to 8,897.70, 12,279.41 and 5,121.33 is: 7,067.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.70 : 12,279.41 = 5,121.33 : x
  2. Step 2: Convert to fraction form
    8,897.70/12,279.41 = 5,121.33/x
  3. Step 3: Cross multiply
    8,897.70x = 12,279.41 × 5,121.33
  4. Step 4: Simplify right side
    8,897.70x = 62,886,885.21
  5. Step 5: Solve for x
    x = 62,886,885.21/8,897.70
  6. Step 6: Final answer
    x = 7,067.77

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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.