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Finding the Fourth Proportional to 8,749, 13,129.58 and 3,554.88

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Solution

The fourth proportional to 8,749, 13,129.58 and 3,554.88 is: 5,334.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749 : 13,129.58 = 3,554.88 : x
  2. Step 2: Convert to fraction form
    8,749/13,129.58 = 3,554.88/x
  3. Step 3: Cross multiply
    8,749x = 13,129.58 × 3,554.88
  4. Step 4: Simplify right side
    8,749x = 46,674,081.35
  5. Step 5: Solve for x
    x = 46,674,081.35/8,749
  6. Step 6: Final answer
    x = 5,334.79

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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.