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Finding the Fourth Proportional to 8,222.80, 12,312.73 and 7,060.45

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Solution

The fourth proportional to 8,222.80, 12,312.73 and 7,060.45 is: 10,572.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,222.80 : 12,312.73 = 7,060.45 : x
  2. Step 2: Convert to fraction form
    8,222.80/12,312.73 = 7,060.45/x
  3. Step 3: Cross multiply
    8,222.80x = 12,312.73 × 7,060.45
  4. Step 4: Simplify right side
    8,222.80x = 86,933,414.53
  5. Step 5: Solve for x
    x = 86,933,414.53/8,222.80
  6. Step 6: Final answer
    x = 10,572.24

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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.