Home / 5,136.76-7,090.50-3,040.78

Finding the Fourth Proportional to 5,136.76, 7,090.50 and 3,040.78

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Solution

The fourth proportional to 5,136.76, 7,090.50 and 3,040.78 is: 4,197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.76 : 7,090.50 = 3,040.78 : x
  2. Step 2: Convert to fraction form
    5,136.76/7,090.50 = 3,040.78/x
  3. Step 3: Cross multiply
    5,136.76x = 7,090.50 × 3,040.78
  4. Step 4: Simplify right side
    5,136.76x = 21,560,650.59
  5. Step 5: Solve for x
    x = 21,560,650.59/5,136.76
  6. Step 6: Final answer
    x = 4,197.32

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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.