Home / 3,001.12-4,136.88-2,942.80

Finding the Fourth Proportional to 3,001.12, 4,136.88 and 2,942.80

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Solution

The fourth proportional to 3,001.12, 4,136.88 and 2,942.80 is: 4,056.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.12 : 4,136.88 = 2,942.80 : x
  2. Step 2: Convert to fraction form
    3,001.12/4,136.88 = 2,942.80/x
  3. Step 3: Cross multiply
    3,001.12x = 4,136.88 × 2,942.80
  4. Step 4: Simplify right side
    3,001.12x = 12,174,010.46
  5. Step 5: Solve for x
    x = 12,174,010.46/3,001.12
  6. Step 6: Final answer
    x = 4,056.49

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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.