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Finding the Fourth Proportional to 8,779.81, 13,167.77 and 2,538.46

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Solution

The fourth proportional to 8,779.81, 13,167.77 and 2,538.46 is: 3,807.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.81 : 13,167.77 = 2,538.46 : x
  2. Step 2: Convert to fraction form
    8,779.81/13,167.77 = 2,538.46/x
  3. Step 3: Cross multiply
    8,779.81x = 13,167.77 × 2,538.46
  4. Step 4: Simplify right side
    8,779.81x = 33,425,844.74
  5. Step 5: Solve for x
    x = 33,425,844.74/8,779.81
  6. Step 6: Final answer
    x = 3,807.13

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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.