Home / 8,749.20-13,115.40-2,902.80

Finding the Fourth Proportional to 8,749.20, 13,115.40 and 2,902.80

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Solution

The fourth proportional to 8,749.20, 13,115.40 and 2,902.80 is: 4,351.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.20 : 13,115.40 = 2,902.80 : x
  2. Step 2: Convert to fraction form
    8,749.20/13,115.40 = 2,902.80/x
  3. Step 3: Cross multiply
    8,749.20x = 13,115.40 × 2,902.80
  4. Step 4: Simplify right side
    8,749.20x = 38,071,383.12
  5. Step 5: Solve for x
    x = 38,071,383.12/8,749.20
  6. Step 6: Final answer
    x = 4,351.41

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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.