Home / 3,912.80-5,834.30-3,478.13

Finding the Fourth Proportional to 3,912.80, 5,834.30 and 3,478.13

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Solution

The fourth proportional to 3,912.80, 5,834.30 and 3,478.13 is: 5,186.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.80 : 5,834.30 = 3,478.13 : x
  2. Step 2: Convert to fraction form
    3,912.80/5,834.30 = 3,478.13/x
  3. Step 3: Cross multiply
    3,912.80x = 5,834.30 × 3,478.13
  4. Step 4: Simplify right side
    3,912.80x = 20,292,465.23
  5. Step 5: Solve for x
    x = 20,292,465.23/3,912.80
  6. Step 6: Final answer
    x = 5,186.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.