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Finding the Fourth Proportional to 8,407.53, 12,620.87 and 4,252.23

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Solution

The fourth proportional to 8,407.53, 12,620.87 and 4,252.23 is: 6,383.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.53 : 12,620.87 = 4,252.23 : x
  2. Step 2: Convert to fraction form
    8,407.53/12,620.87 = 4,252.23/x
  3. Step 3: Cross multiply
    8,407.53x = 12,620.87 × 4,252.23
  4. Step 4: Simplify right side
    8,407.53x = 53,666,820.78
  5. Step 5: Solve for x
    x = 53,666,820.78/8,407.53
  6. Step 6: Final answer
    x = 6,383.19

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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.