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Finding the Fourth Proportional to 7,535.90, 11,305.90 and 3,640.30

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Solution

The fourth proportional to 7,535.90, 11,305.90 and 3,640.30 is: 5,461.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,535.90 : 11,305.90 = 3,640.30 : x
  2. Step 2: Convert to fraction form
    7,535.90/11,305.90 = 3,640.30/x
  3. Step 3: Cross multiply
    7,535.90x = 11,305.90 × 3,640.30
  4. Step 4: Simplify right side
    7,535.90x = 41,156,867.77
  5. Step 5: Solve for x
    x = 41,156,867.77/7,535.90
  6. Step 6: Final answer
    x = 5,461.44

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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.