Home / 5,136.60-7,086.30-3,955.80

Finding the Fourth Proportional to 5,136.60, 7,086.30 and 3,955.80

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Solution

The fourth proportional to 5,136.60, 7,086.30 and 3,955.80 is: 5,457.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.60 : 7,086.30 = 3,955.80 : x
  2. Step 2: Convert to fraction form
    5,136.60/7,086.30 = 3,955.80/x
  3. Step 3: Cross multiply
    5,136.60x = 7,086.30 × 3,955.80
  4. Step 4: Simplify right side
    5,136.60x = 28,031,985.54
  5. Step 5: Solve for x
    x = 28,031,985.54/5,136.60
  6. Step 6: Final answer
    x = 5,457.30

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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.