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Finding the Fourth Proportional to 7,215.96, 10,814.49 and 3,702.99

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Solution

The fourth proportional to 7,215.96, 10,814.49 and 3,702.99 is: 5,549.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.96 : 10,814.49 = 3,702.99 : x
  2. Step 2: Convert to fraction form
    7,215.96/10,814.49 = 3,702.99/x
  3. Step 3: Cross multiply
    7,215.96x = 10,814.49 × 3,702.99
  4. Step 4: Simplify right side
    7,215.96x = 40,045,948.33
  5. Step 5: Solve for x
    x = 40,045,948.33/7,215.96
  6. Step 6: Final answer
    x = 5,549.64

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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.