Home / 4,990.08-7,469.76-4,160.64

Finding the Fourth Proportional to 4,990.08, 7,469.76 and 4,160.64

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Solution

The fourth proportional to 4,990.08, 7,469.76 and 4,160.64 is: 6,228.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.08 : 7,469.76 = 4,160.64 : x
  2. Step 2: Convert to fraction form
    4,990.08/7,469.76 = 4,160.64/x
  3. Step 3: Cross multiply
    4,990.08x = 7,469.76 × 4,160.64
  4. Step 4: Simplify right side
    4,990.08x = 31,078,982.25
  5. Step 5: Solve for x
    x = 31,078,982.25/4,990.08
  6. Step 6: Final answer
    x = 6,228.15

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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.