Home / 7,886.16-11,826.18-2,620.98

Finding the Fourth Proportional to 7,886.16, 11,826.18 and 2,620.98

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Solution

The fourth proportional to 7,886.16, 11,826.18 and 2,620.98 is: 3,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.16 : 11,826.18 = 2,620.98 : x
  2. Step 2: Convert to fraction form
    7,886.16/11,826.18 = 2,620.98/x
  3. Step 3: Cross multiply
    7,886.16x = 11,826.18 × 2,620.98
  4. Step 4: Simplify right side
    7,886.16x = 30,996,181.26
  5. Step 5: Solve for x
    x = 30,996,181.26/7,886.16
  6. Step 6: Final answer
    x = 3,930.45

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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.