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Finding the Fourth Proportional to 2,225.45, 3,337.65 and 838.92

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Solution

The fourth proportional to 2,225.45, 3,337.65 and 838.92 is: 1,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.45 : 3,337.65 = 838.92 : x
  2. Step 2: Convert to fraction form
    2,225.45/3,337.65 = 838.92/x
  3. Step 3: Cross multiply
    2,225.45x = 3,337.65 × 838.92
  4. Step 4: Simplify right side
    2,225.45x = 2,800,021.34
  5. Step 5: Solve for x
    x = 2,800,021.34/2,225.45
  6. Step 6: Final answer
    x = 1,258.18

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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.