Home / 7,480.40-11,216.65-3,318.60

Finding the Fourth Proportional to 7,480.40, 11,216.65 and 3,318.60

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Solution

The fourth proportional to 7,480.40, 11,216.65 and 3,318.60 is: 4,976.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480.40 : 11,216.65 = 3,318.60 : x
  2. Step 2: Convert to fraction form
    7,480.40/11,216.65 = 3,318.60/x
  3. Step 3: Cross multiply
    7,480.40x = 11,216.65 × 3,318.60
  4. Step 4: Simplify right side
    7,480.40x = 37,223,529.37
  5. Step 5: Solve for x
    x = 37,223,529.37/7,480.40
  6. Step 6: Final answer
    x = 4,976.14

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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.