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Finding the Fourth Proportional to 7,033.90, 9,705.72 and 3,890.11

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Solution

The fourth proportional to 7,033.90, 9,705.72 and 3,890.11 is: 5,367.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,033.90 : 9,705.72 = 3,890.11 : x
  2. Step 2: Convert to fraction form
    7,033.90/9,705.72 = 3,890.11/x
  3. Step 3: Cross multiply
    7,033.90x = 9,705.72 × 3,890.11
  4. Step 4: Simplify right side
    7,033.90x = 37,756,318.43
  5. Step 5: Solve for x
    x = 37,756,318.43/7,033.90
  6. Step 6: Final answer
    x = 5,367.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.