Home / 7,040.94-9,716.70-3,897.12

Finding the Fourth Proportional to 7,040.94, 9,716.70 and 3,897.12

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Solution

The fourth proportional to 7,040.94, 9,716.70 and 3,897.12 is: 5,378.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.94 : 9,716.70 = 3,897.12 : x
  2. Step 2: Convert to fraction form
    7,040.94/9,716.70 = 3,897.12/x
  3. Step 3: Cross multiply
    7,040.94x = 9,716.70 × 3,897.12
  4. Step 4: Simplify right side
    7,040.94x = 37,867,145.90
  5. Step 5: Solve for x
    x = 37,867,145.90/7,040.94
  6. Step 6: Final answer
    x = 5,378.14

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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.