Home / 8,765.80-13,155.05-3,429.77

Finding the Fourth Proportional to 8,765.80, 13,155.05 and 3,429.77

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Solution

The fourth proportional to 8,765.80, 13,155.05 and 3,429.77 is: 5,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.80 : 13,155.05 = 3,429.77 : x
  2. Step 2: Convert to fraction form
    8,765.80/13,155.05 = 3,429.77/x
  3. Step 3: Cross multiply
    8,765.80x = 13,155.05 × 3,429.77
  4. Step 4: Simplify right side
    8,765.80x = 45,118,712.91
  5. Step 5: Solve for x
    x = 45,118,712.91/8,765.80
  6. Step 6: Final answer
    x = 5,147.13

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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.