Home / 4,678.92-7,025.30-3,128.60

Finding the Fourth Proportional to 4,678.92, 7,025.30 and 3,128.60

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Solution

The fourth proportional to 4,678.92, 7,025.30 and 3,128.60 is: 4,697.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.92 : 7,025.30 = 3,128.60 : x
  2. Step 2: Convert to fraction form
    4,678.92/7,025.30 = 3,128.60/x
  3. Step 3: Cross multiply
    4,678.92x = 7,025.30 × 3,128.60
  4. Step 4: Simplify right side
    4,678.92x = 21,979,353.58
  5. Step 5: Solve for x
    x = 21,979,353.58/4,678.92
  6. Step 6: Final answer
    x = 4,697.53

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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.