Home / 5,178.39-7,135.92-3,683.70

Finding the Fourth Proportional to 5,178.39, 7,135.92 and 3,683.70

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Solution

The fourth proportional to 5,178.39, 7,135.92 and 3,683.70 is: 5,076.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.39 : 7,135.92 = 3,683.70 : x
  2. Step 2: Convert to fraction form
    5,178.39/7,135.92 = 3,683.70/x
  3. Step 3: Cross multiply
    5,178.39x = 7,135.92 × 3,683.70
  4. Step 4: Simplify right side
    5,178.39x = 26,286,588.50
  5. Step 5: Solve for x
    x = 26,286,588.50/5,178.39
  6. Step 6: Final answer
    x = 5,076.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.