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Finding the Fourth Proportional to 4,715.90, 7,069.20 and 2,636.90

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Solution

The fourth proportional to 4,715.90, 7,069.20 and 2,636.90 is: 3,952.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,715.90 : 7,069.20 = 2,636.90 : x
  2. Step 2: Convert to fraction form
    4,715.90/7,069.20 = 2,636.90/x
  3. Step 3: Cross multiply
    4,715.90x = 7,069.20 × 2,636.90
  4. Step 4: Simplify right side
    4,715.90x = 18,640,773.48
  5. Step 5: Solve for x
    x = 18,640,773.48/4,715.90
  6. Step 6: Final answer
    x = 3,952.75

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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.