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Finding the Fourth Proportional to 8,354.22, 12,530.90 and 2,807.62

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Solution

The fourth proportional to 8,354.22, 12,530.90 and 2,807.62 is: 4,211.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,354.22 : 12,530.90 = 2,807.62 : x
  2. Step 2: Convert to fraction form
    8,354.22/12,530.90 = 2,807.62/x
  3. Step 3: Cross multiply
    8,354.22x = 12,530.90 × 2,807.62
  4. Step 4: Simplify right side
    8,354.22x = 35,182,005.46
  5. Step 5: Solve for x
    x = 35,182,005.46/8,354.22
  6. Step 6: Final answer
    x = 4,211.29

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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.