Home / 7,113.15-9,816.07-3,926.47

Finding the Fourth Proportional to 7,113.15, 9,816.07 and 3,926.47

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Solution

The fourth proportional to 7,113.15, 9,816.07 and 3,926.47 is: 5,418.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.15 : 9,816.07 = 3,926.47 : x
  2. Step 2: Convert to fraction form
    7,113.15/9,816.07 = 3,926.47/x
  3. Step 3: Cross multiply
    7,113.15x = 9,816.07 × 3,926.47
  4. Step 4: Simplify right side
    7,113.15x = 38,542,504.37
  5. Step 5: Solve for x
    x = 38,542,504.37/7,113.15
  6. Step 6: Final answer
    x = 5,418.49

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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.