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Finding the Fourth Proportional to 4,068.19, 6,102.29 and 990.19

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Solution

The fourth proportional to 4,068.19, 6,102.29 and 990.19 is: 1,485.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,068.19 : 6,102.29 = 990.19 : x
  2. Step 2: Convert to fraction form
    4,068.19/6,102.29 = 990.19/x
  3. Step 3: Cross multiply
    4,068.19x = 6,102.29 × 990.19
  4. Step 4: Simplify right side
    4,068.19x = 6,042,406.33
  5. Step 5: Solve for x
    x = 6,042,406.33/4,068.19
  6. Step 6: Final answer
    x = 1,485.28

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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.