Home / 7,214.20-10,822.61-3,318.50

Finding the Fourth Proportional to 7,214.20, 10,822.61 and 3,318.50

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Solution

The fourth proportional to 7,214.20, 10,822.61 and 3,318.50 is: 4,978.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,214.20 : 10,822.61 = 3,318.50 : x
  2. Step 2: Convert to fraction form
    7,214.20/10,822.61 = 3,318.50/x
  3. Step 3: Cross multiply
    7,214.20x = 10,822.61 × 3,318.50
  4. Step 4: Simplify right side
    7,214.20x = 35,914,831.29
  5. Step 5: Solve for x
    x = 35,914,831.29/7,214.20
  6. Step 6: Final answer
    x = 4,978.35

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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.