Home / 7,218.97-10,821.03-3,931.18

Finding the Fourth Proportional to 7,218.97, 10,821.03 and 3,931.18

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Solution

The fourth proportional to 7,218.97, 10,821.03 and 3,931.18 is: 5,892.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.97 : 10,821.03 = 3,931.18 : x
  2. Step 2: Convert to fraction form
    7,218.97/10,821.03 = 3,931.18/x
  3. Step 3: Cross multiply
    7,218.97x = 10,821.03 × 3,931.18
  4. Step 4: Simplify right side
    7,218.97x = 42,539,416.72
  5. Step 5: Solve for x
    x = 42,539,416.72/7,218.97
  6. Step 6: Final answer
    x = 5,892.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.