Home / 8,758.08-13,140.72-6,429.96

Finding the Fourth Proportional to 8,758.08, 13,140.72 and 6,429.96

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Solution

The fourth proportional to 8,758.08, 13,140.72 and 6,429.96 is: 9,647.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.08 : 13,140.72 = 6,429.96 : x
  2. Step 2: Convert to fraction form
    8,758.08/13,140.72 = 6,429.96/x
  3. Step 3: Cross multiply
    8,758.08x = 13,140.72 × 6,429.96
  4. Step 4: Simplify right side
    8,758.08x = 84,494,303.97
  5. Step 5: Solve for x
    x = 84,494,303.97/8,758.08
  6. Step 6: Final answer
    x = 9,647.58

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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.