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Finding the Fourth Proportional to 7,879.91, 10,874.93 and 4,897.08

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Solution

The fourth proportional to 7,879.91, 10,874.93 and 4,897.08 is: 6,758.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.91 : 10,874.93 = 4,897.08 : x
  2. Step 2: Convert to fraction form
    7,879.91/10,874.93 = 4,897.08/x
  3. Step 3: Cross multiply
    7,879.91x = 10,874.93 × 4,897.08
  4. Step 4: Simplify right side
    7,879.91x = 53,255,377.72
  5. Step 5: Solve for x
    x = 53,255,377.72/7,879.91
  6. Step 6: Final answer
    x = 6,758.38

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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.