Home / 9,136.85-12,608.85-5,157.96

Finding the Fourth Proportional to 9,136.85, 12,608.85 and 5,157.96

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Solution

The fourth proportional to 9,136.85, 12,608.85 and 5,157.96 is: 7,117.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,136.85 : 12,608.85 = 5,157.96 : x
  2. Step 2: Convert to fraction form
    9,136.85/12,608.85 = 5,157.96/x
  3. Step 3: Cross multiply
    9,136.85x = 12,608.85 × 5,157.96
  4. Step 4: Simplify right side
    9,136.85x = 65,035,943.95
  5. Step 5: Solve for x
    x = 65,035,943.95/9,136.85
  6. Step 6: Final answer
    x = 7,117.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.