Home / 7,739.20-11,608.80-3,353.60

Finding the Fourth Proportional to 7,739.20, 11,608.80 and 3,353.60

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Solution

The fourth proportional to 7,739.20, 11,608.80 and 3,353.60 is: 5,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.20 : 11,608.80 = 3,353.60 : x
  2. Step 2: Convert to fraction form
    7,739.20/11,608.80 = 3,353.60/x
  3. Step 3: Cross multiply
    7,739.20x = 11,608.80 × 3,353.60
  4. Step 4: Simplify right side
    7,739.20x = 38,931,271.68
  5. Step 5: Solve for x
    x = 38,931,271.68/7,739.20
  6. Step 6: Final answer
    x = 5,030.40

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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.