Home / 5,136.28-7,704.38-1,240.68

Finding the Fourth Proportional to 5,136.28, 7,704.38 and 1,240.68

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Solution

The fourth proportional to 5,136.28, 7,704.38 and 1,240.68 is: 1,861.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.28 : 7,704.38 = 1,240.68 : x
  2. Step 2: Convert to fraction form
    5,136.28/7,704.38 = 1,240.68/x
  3. Step 3: Cross multiply
    5,136.28x = 7,704.38 × 1,240.68
  4. Step 4: Simplify right side
    5,136.28x = 9,558,670.18
  5. Step 5: Solve for x
    x = 9,558,670.18/5,136.28
  6. Step 6: Final answer
    x = 1,861.01

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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.