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Finding the Fourth Proportional to 8,397.63, 12,595.94 and 3,131.63

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Solution

The fourth proportional to 8,397.63, 12,595.94 and 3,131.63 is: 4,697.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,397.63 : 12,595.94 = 3,131.63 : x
  2. Step 2: Convert to fraction form
    8,397.63/12,595.94 = 3,131.63/x
  3. Step 3: Cross multiply
    8,397.63x = 12,595.94 × 3,131.63
  4. Step 4: Simplify right side
    8,397.63x = 39,445,744.94
  5. Step 5: Solve for x
    x = 39,445,744.94/8,397.63
  6. Step 6: Final answer
    x = 4,697.25

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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.