Home / 8,749.80-13,124.70-2,905.65

Finding the Fourth Proportional to 8,749.80, 13,124.70 and 2,905.65

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Solution

The fourth proportional to 8,749.80, 13,124.70 and 2,905.65 is: 4,358.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.80 : 13,124.70 = 2,905.65 : x
  2. Step 2: Convert to fraction form
    8,749.80/13,124.70 = 2,905.65/x
  3. Step 3: Cross multiply
    8,749.80x = 13,124.70 × 2,905.65
  4. Step 4: Simplify right side
    8,749.80x = 38,135,784.56
  5. Step 5: Solve for x
    x = 38,135,784.56/8,749.80
  6. Step 6: Final answer
    x = 4,358.48

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Similar ratio
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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.