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Finding the Fourth Proportional to 5,281.46, 7,918.99 and 3,636.20

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Solution

The fourth proportional to 5,281.46, 7,918.99 and 3,636.20 is: 5,452.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.46 : 7,918.99 = 3,636.20 : x
  2. Step 2: Convert to fraction form
    5,281.46/7,918.99 = 3,636.20/x
  3. Step 3: Cross multiply
    5,281.46x = 7,918.99 × 3,636.20
  4. Step 4: Simplify right side
    5,281.46x = 28,795,031.44
  5. Step 5: Solve for x
    x = 28,795,031.44/5,281.46
  6. Step 6: Final answer
    x = 5,452.10

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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.