Home / 8,749.12-13,124.46-2,905.78

Finding the Fourth Proportional to 8,749.12, 13,124.46 and 2,905.78

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Solution

The fourth proportional to 8,749.12, 13,124.46 and 2,905.78 is: 4,358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.12 : 13,124.46 = 2,905.78 : x
  2. Step 2: Convert to fraction form
    8,749.12/13,124.46 = 2,905.78/x
  3. Step 3: Cross multiply
    8,749.12x = 13,124.46 × 2,905.78
  4. Step 4: Simplify right side
    8,749.12x = 38,136,793.38
  5. Step 5: Solve for x
    x = 38,136,793.38/8,749.12
  6. Step 6: Final answer
    x = 4,358.93

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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.