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Finding the Fourth Proportional to 7,809.56, 11,712.72 and 2,877.92

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Solution

The fourth proportional to 7,809.56, 11,712.72 and 2,877.92 is: 4,316.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.56 : 11,712.72 = 2,877.92 : x
  2. Step 2: Convert to fraction form
    7,809.56/11,712.72 = 2,877.92/x
  3. Step 3: Cross multiply
    7,809.56x = 11,712.72 × 2,877.92
  4. Step 4: Simplify right side
    7,809.56x = 33,708,271.14
  5. Step 5: Solve for x
    x = 33,708,271.14/7,809.56
  6. Step 6: Final answer
    x = 4,316.28

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.