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Finding the Fourth Proportional to 4,995.30, 7,480.80 and 4,776.60

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Solution

The fourth proportional to 4,995.30, 7,480.80 and 4,776.60 is: 7,153.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,995.30 : 7,480.80 = 4,776.60 : x
  2. Step 2: Convert to fraction form
    4,995.30/7,480.80 = 4,776.60/x
  3. Step 3: Cross multiply
    4,995.30x = 7,480.80 × 4,776.60
  4. Step 4: Simplify right side
    4,995.30x = 35,732,789.28
  5. Step 5: Solve for x
    x = 35,732,789.28/4,995.30
  6. Step 6: Final answer
    x = 7,153.28

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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.