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Finding the Fourth Proportional to 8,751.87, 13,129.51 and 2,830.22

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Solution

The fourth proportional to 8,751.87, 13,129.51 and 2,830.22 is: 4,245.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.87 : 13,129.51 = 2,830.22 : x
  2. Step 2: Convert to fraction form
    8,751.87/13,129.51 = 2,830.22/x
  3. Step 3: Cross multiply
    8,751.87x = 13,129.51 × 2,830.22
  4. Step 4: Simplify right side
    8,751.87x = 37,159,438.15
  5. Step 5: Solve for x
    x = 37,159,438.15/8,751.87
  6. Step 6: Final answer
    x = 4,245.89

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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.