Home / 3,415.64-5,123.39-1,225.80

Finding the Fourth Proportional to 3,415.64, 5,123.39 and 1,225.80

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Solution

The fourth proportional to 3,415.64, 5,123.39 and 1,225.80 is: 1,838.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.64 : 5,123.39 = 1,225.80 : x
  2. Step 2: Convert to fraction form
    3,415.64/5,123.39 = 1,225.80/x
  3. Step 3: Cross multiply
    3,415.64x = 5,123.39 × 1,225.80
  4. Step 4: Simplify right side
    3,415.64x = 6,280,245.33
  5. Step 5: Solve for x
    x = 6,280,245.33/3,415.64
  6. Step 6: Final answer
    x = 1,838.68

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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.