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Finding the Fourth Proportional to 3,331.02, 4,995.68 and 990.48

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Solution

The fourth proportional to 3,331.02, 4,995.68 and 990.48 is: 1,485.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,331.02 : 4,995.68 = 990.48 : x
  2. Step 2: Convert to fraction form
    3,331.02/4,995.68 = 990.48/x
  3. Step 3: Cross multiply
    3,331.02x = 4,995.68 × 990.48
  4. Step 4: Simplify right side
    3,331.02x = 4,948,116.17
  5. Step 5: Solve for x
    x = 4,948,116.17/3,331.02
  6. Step 6: Final answer
    x = 1,485.47

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.