Home / 3,438.45-5,151.60-2,818.80

Finding the Fourth Proportional to 3,438.45, 5,151.60 and 2,818.80

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Solution

The fourth proportional to 3,438.45, 5,151.60 and 2,818.80 is: 4,223.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.45 : 5,151.60 = 2,818.80 : x
  2. Step 2: Convert to fraction form
    3,438.45/5,151.60 = 2,818.80/x
  3. Step 3: Cross multiply
    3,438.45x = 5,151.60 × 2,818.80
  4. Step 4: Simplify right side
    3,438.45x = 14,521,330.08
  5. Step 5: Solve for x
    x = 14,521,330.08/3,438.45
  6. Step 6: Final answer
    x = 4,223.22

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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.