Home / 3,894.16-5,370.14-3,147.62

Finding the Fourth Proportional to 3,894.16, 5,370.14 and 3,147.62

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Solution

The fourth proportional to 3,894.16, 5,370.14 and 3,147.62 is: 4,340.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.16 : 5,370.14 = 3,147.62 : x
  2. Step 2: Convert to fraction form
    3,894.16/5,370.14 = 3,147.62/x
  3. Step 3: Cross multiply
    3,894.16x = 5,370.14 × 3,147.62
  4. Step 4: Simplify right side
    3,894.16x = 16,903,160.07
  5. Step 5: Solve for x
    x = 16,903,160.07/3,894.16
  6. Step 6: Final answer
    x = 4,340.64

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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.