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Finding the Fourth Proportional to 7,461.90, 11,196.90 and 3,079.80

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Solution

The fourth proportional to 7,461.90, 11,196.90 and 3,079.80 is: 4,621.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,461.90 : 11,196.90 = 3,079.80 : x
  2. Step 2: Convert to fraction form
    7,461.90/11,196.90 = 3,079.80/x
  3. Step 3: Cross multiply
    7,461.90x = 11,196.90 × 3,079.80
  4. Step 4: Simplify right side
    7,461.90x = 34,484,212.62
  5. Step 5: Solve for x
    x = 34,484,212.62/7,461.90
  6. Step 6: Final answer
    x = 4,621.37

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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.