Home / 3,991.48-5,510.53-3,039.80

Finding the Fourth Proportional to 3,991.48, 5,510.53 and 3,039.80

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Solution

The fourth proportional to 3,991.48, 5,510.53 and 3,039.80 is: 4,196.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.48 : 5,510.53 = 3,039.80 : x
  2. Step 2: Convert to fraction form
    3,991.48/5,510.53 = 3,039.80/x
  3. Step 3: Cross multiply
    3,991.48x = 5,510.53 × 3,039.80
  4. Step 4: Simplify right side
    3,991.48x = 16,750,885.34
  5. Step 5: Solve for x
    x = 16,750,885.34/3,991.48
  6. Step 6: Final answer
    x = 4,196.66

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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.