Home / 4,905.30-7,345.80-3,147.60

Finding the Fourth Proportional to 4,905.30, 7,345.80 and 3,147.60

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Solution

The fourth proportional to 4,905.30, 7,345.80 and 3,147.60 is: 4,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.30 : 7,345.80 = 3,147.60 : x
  2. Step 2: Convert to fraction form
    4,905.30/7,345.80 = 3,147.60/x
  3. Step 3: Cross multiply
    4,905.30x = 7,345.80 × 3,147.60
  4. Step 4: Simplify right side
    4,905.30x = 23,121,640.08
  5. Step 5: Solve for x
    x = 23,121,640.08/4,905.30
  6. Step 6: Final answer
    x = 4,713.60

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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.