Home / 7,322.12-10,981.98-2,126.76

Finding the Fourth Proportional to 7,322.12, 10,981.98 and 2,126.76

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Solution

The fourth proportional to 7,322.12, 10,981.98 and 2,126.76 is: 3,189.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.12 : 10,981.98 = 2,126.76 : x
  2. Step 2: Convert to fraction form
    7,322.12/10,981.98 = 2,126.76/x
  3. Step 3: Cross multiply
    7,322.12x = 10,981.98 × 2,126.76
  4. Step 4: Simplify right side
    7,322.12x = 23,356,035.78
  5. Step 5: Solve for x
    x = 23,356,035.78/7,322.12
  6. Step 6: Final answer
    x = 3,189.79

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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.