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Finding the Fourth Proportional to 8,779.78, 13,163.51 and 3,232.40

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Solution

The fourth proportional to 8,779.78, 13,163.51 and 3,232.40 is: 4,846.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.78 : 13,163.51 = 3,232.40 : x
  2. Step 2: Convert to fraction form
    8,779.78/13,163.51 = 3,232.40/x
  3. Step 3: Cross multiply
    8,779.78x = 13,163.51 × 3,232.40
  4. Step 4: Simplify right side
    8,779.78x = 42,549,770.71
  5. Step 5: Solve for x
    x = 42,549,770.71/8,779.78
  6. Step 6: Final answer
    x = 4,846.34

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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.