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Finding the Fourth Proportional to 8,012.55, 12,018.89 and 5,256.66

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Solution

The fourth proportional to 8,012.55, 12,018.89 and 5,256.66 is: 7,885.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,012.55 : 12,018.89 = 5,256.66 : x
  2. Step 2: Convert to fraction form
    8,012.55/12,018.89 = 5,256.66/x
  3. Step 3: Cross multiply
    8,012.55x = 12,018.89 × 5,256.66
  4. Step 4: Simplify right side
    8,012.55x = 63,179,192.02
  5. Step 5: Solve for x
    x = 63,179,192.02/8,012.55
  6. Step 6: Final answer
    x = 7,885.03

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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.