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Finding the Fourth Proportional to 4,068.96, 6,103.40 and 990.96

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Solution

The fourth proportional to 4,068.96, 6,103.40 and 990.96 is: 1,486.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,068.96 : 6,103.40 = 990.96 : x
  2. Step 2: Convert to fraction form
    4,068.96/6,103.40 = 990.96/x
  3. Step 3: Cross multiply
    4,068.96x = 6,103.40 × 990.96
  4. Step 4: Simplify right side
    4,068.96x = 6,048,220.31
  5. Step 5: Solve for x
    x = 6,048,220.31/4,068.96
  6. Step 6: Final answer
    x = 1,486.43

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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.