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Finding the Fourth Proportional to 5,328.59, 7,983.30 and 3,136.12

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Solution

The fourth proportional to 5,328.59, 7,983.30 and 3,136.12 is: 4,698.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.59 : 7,983.30 = 3,136.12 : x
  2. Step 2: Convert to fraction form
    5,328.59/7,983.30 = 3,136.12/x
  3. Step 3: Cross multiply
    5,328.59x = 7,983.30 × 3,136.12
  4. Step 4: Simplify right side
    5,328.59x = 25,036,601.05
  5. Step 5: Solve for x
    x = 25,036,601.05/5,328.59
  6. Step 6: Final answer
    x = 4,698.54

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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.