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Finding the Fourth Proportional to 8,779.64, 13,169.46 and 3,848.16

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Solution

The fourth proportional to 8,779.64, 13,169.46 and 3,848.16 is: 5,772.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.64 : 13,169.46 = 3,848.16 : x
  2. Step 2: Convert to fraction form
    8,779.64/13,169.46 = 3,848.16/x
  3. Step 3: Cross multiply
    8,779.64x = 13,169.46 × 3,848.16
  4. Step 4: Simplify right side
    8,779.64x = 50,678,189.19
  5. Step 5: Solve for x
    x = 50,678,189.19/8,779.64
  6. Step 6: Final answer
    x = 5,772.24

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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.