Home / 8,780.57-13,175.99-3,518.11

Finding the Fourth Proportional to 8,780.57, 13,175.99 and 3,518.11

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Solution

The fourth proportional to 8,780.57, 13,175.99 and 3,518.11 is: 5,279.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.57 : 13,175.99 = 3,518.11 : x
  2. Step 2: Convert to fraction form
    8,780.57/13,175.99 = 3,518.11/x
  3. Step 3: Cross multiply
    8,780.57x = 13,175.99 × 3,518.11
  4. Step 4: Simplify right side
    8,780.57x = 46,354,520.14
  5. Step 5: Solve for x
    x = 46,354,520.14/8,780.57
  6. Step 6: Final answer
    x = 5,279.21

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1.5x scale

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.