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Finding the Fourth Proportional to 8,151.90, 12,195.45 and 7,068.30

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Solution

The fourth proportional to 8,151.90, 12,195.45 and 7,068.30 is: 10,574.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.90 : 12,195.45 = 7,068.30 : x
  2. Step 2: Convert to fraction form
    8,151.90/12,195.45 = 7,068.30/x
  3. Step 3: Cross multiply
    8,151.90x = 12,195.45 × 7,068.30
  4. Step 4: Simplify right side
    8,151.90x = 86,201,099.24
  5. Step 5: Solve for x
    x = 86,201,099.24/8,151.90
  6. Step 6: Final answer
    x = 10,574.36

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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.