Home / 6,147.20-9,220.80-5,272.40

Finding the Fourth Proportional to 6,147.20, 9,220.80 and 5,272.40

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Solution

The fourth proportional to 6,147.20, 9,220.80 and 5,272.40 is: 7,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,147.20 : 9,220.80 = 5,272.40 : x
  2. Step 2: Convert to fraction form
    6,147.20/9,220.80 = 5,272.40/x
  3. Step 3: Cross multiply
    6,147.20x = 9,220.80 × 5,272.40
  4. Step 4: Simplify right side
    6,147.20x = 48,615,745.92
  5. Step 5: Solve for x
    x = 48,615,745.92/6,147.20
  6. Step 6: Final answer
    x = 7,908.60

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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.