Home / 9,136.70-12,608.60-5,157.80

Finding the Fourth Proportional to 9,136.70, 12,608.60 and 5,157.80

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Solution

The fourth proportional to 9,136.70, 12,608.60 and 5,157.80 is: 7,117.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,136.70 : 12,608.60 = 5,157.80 : x
  2. Step 2: Convert to fraction form
    9,136.70/12,608.60 = 5,157.80/x
  3. Step 3: Cross multiply
    9,136.70x = 12,608.60 × 5,157.80
  4. Step 4: Simplify right side
    9,136.70x = 65,032,637.08
  5. Step 5: Solve for x
    x = 65,032,637.08/9,136.70
  6. Step 6: Final answer
    x = 7,117.74

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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.