Home / 7,399.20-11,077.20-6,621.60

Finding the Fourth Proportional to 7,399.20, 11,077.20 and 6,621.60

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Solution

The fourth proportional to 7,399.20, 11,077.20 and 6,621.60 is: 9,913.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,399.20 : 11,077.20 = 6,621.60 : x
  2. Step 2: Convert to fraction form
    7,399.20/11,077.20 = 6,621.60/x
  3. Step 3: Cross multiply
    7,399.20x = 11,077.20 × 6,621.60
  4. Step 4: Simplify right side
    7,399.20x = 73,348,787.52
  5. Step 5: Solve for x
    x = 73,348,787.52/7,399.20
  6. Step 6: Final answer
    x = 9,913.07

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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.