Home / 7,399.20-11,080.58-4,920.60

Finding the Fourth Proportional to 7,399.20, 11,080.58 and 4,920.60

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Solution

The fourth proportional to 7,399.20, 11,080.58 and 4,920.60 is: 7,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,399.20 : 11,080.58 = 4,920.60 : x
  2. Step 2: Convert to fraction form
    7,399.20/11,080.58 = 4,920.60/x
  3. Step 3: Cross multiply
    7,399.20x = 11,080.58 × 4,920.60
  4. Step 4: Simplify right side
    7,399.20x = 54,523,077.35
  5. Step 5: Solve for x
    x = 54,523,077.35/7,399.20
  6. Step 6: Final answer
    x = 7,368.78

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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.