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Finding the Fourth Proportional to 7,879.07, 11,818.91 and 2,948.20

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Solution

The fourth proportional to 7,879.07, 11,818.91 and 2,948.20 is: 4,422.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.07 : 11,818.91 = 2,948.20 : x
  2. Step 2: Convert to fraction form
    7,879.07/11,818.91 = 2,948.20/x
  3. Step 3: Cross multiply
    7,879.07x = 11,818.91 × 2,948.20
  4. Step 4: Simplify right side
    7,879.07x = 34,844,488.29
  5. Step 5: Solve for x
    x = 34,844,488.29/7,879.07
  6. Step 6: Final answer
    x = 4,422.41

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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.