Home / 7,041.20-9,716.92-3,897.38

Finding the Fourth Proportional to 7,041.20, 9,716.92 and 3,897.38

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Solution

The fourth proportional to 7,041.20, 9,716.92 and 3,897.38 is: 5,378.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,041.20 : 9,716.92 = 3,897.38 : x
  2. Step 2: Convert to fraction form
    7,041.20/9,716.92 = 3,897.38/x
  3. Step 3: Cross multiply
    7,041.20x = 9,716.92 × 3,897.38
  4. Step 4: Simplify right side
    7,041.20x = 37,870,471.34
  5. Step 5: Solve for x
    x = 37,870,471.34/7,041.20
  6. Step 6: Final answer
    x = 5,378.42

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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.