Home / 3,948.08-5,458.20-3,455.60

Finding the Fourth Proportional to 3,948.08, 5,458.20 and 3,455.60

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Solution

The fourth proportional to 3,948.08, 5,458.20 and 3,455.60 is: 4,777.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.08 : 5,458.20 = 3,455.60 : x
  2. Step 2: Convert to fraction form
    3,948.08/5,458.20 = 3,455.60/x
  3. Step 3: Cross multiply
    3,948.08x = 5,458.20 × 3,455.60
  4. Step 4: Simplify right side
    3,948.08x = 18,861,355.92
  5. Step 5: Solve for x
    x = 18,861,355.92/3,948.08
  6. Step 6: Final answer
    x = 4,777.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.