Home / 5,509.60-8,240.40-4,928.80

Finding the Fourth Proportional to 5,509.60, 8,240.40 and 4,928.80

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Solution

The fourth proportional to 5,509.60, 8,240.40 and 4,928.80 is: 7,371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.60 : 8,240.40 = 4,928.80 : x
  2. Step 2: Convert to fraction form
    5,509.60/8,240.40 = 4,928.80/x
  3. Step 3: Cross multiply
    5,509.60x = 8,240.40 × 4,928.80
  4. Step 4: Simplify right side
    5,509.60x = 40,615,283.52
  5. Step 5: Solve for x
    x = 40,615,283.52/5,509.60
  6. Step 6: Final answer
    x = 7,371.73

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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.