Home / 7,084.28-10,628-2,086.78

Finding the Fourth Proportional to 7,084.28, 10,628 and 2,086.78

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Solution

The fourth proportional to 7,084.28, 10,628 and 2,086.78 is: 3,130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,084.28 : 10,628 = 2,086.78 : x
  2. Step 2: Convert to fraction form
    7,084.28/10,628 = 2,086.78/x
  3. Step 3: Cross multiply
    7,084.28x = 10,628 × 2,086.78
  4. Step 4: Simplify right side
    7,084.28x = 22,178,297.84
  5. Step 5: Solve for x
    x = 22,178,297.84/7,084.28
  6. Step 6: Final answer
    x = 3,130.64

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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.