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Finding the Fourth Proportional to 6,155.20, 9,223.20 and 5,329.60

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Solution

The fourth proportional to 6,155.20, 9,223.20 and 5,329.60 is: 7,986.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,155.20 : 9,223.20 = 5,329.60 : x
  2. Step 2: Convert to fraction form
    6,155.20/9,223.20 = 5,329.60/x
  3. Step 3: Cross multiply
    6,155.20x = 9,223.20 × 5,329.60
  4. Step 4: Simplify right side
    6,155.20x = 49,155,966.72
  5. Step 5: Solve for x
    x = 49,155,966.72/6,155.20
  6. Step 6: Final answer
    x = 7,986.09

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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.