Home / 7,120.21-9,825.93-3,933.47

Finding the Fourth Proportional to 7,120.21, 9,825.93 and 3,933.47

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Solution

The fourth proportional to 7,120.21, 9,825.93 and 3,933.47 is: 5,428.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.21 : 9,825.93 = 3,933.47 : x
  2. Step 2: Convert to fraction form
    7,120.21/9,825.93 = 3,933.47/x
  3. Step 3: Cross multiply
    7,120.21x = 9,825.93 × 3,933.47
  4. Step 4: Simplify right side
    7,120.21x = 38,650,008.87
  5. Step 5: Solve for x
    x = 38,650,008.87/7,120.21
  6. Step 6: Final answer
    x = 5,428.21

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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.