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Finding the Fourth Proportional to 7,808.88, 11,712.57 and 4,297.74

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Solution

The fourth proportional to 7,808.88, 11,712.57 and 4,297.74 is: 6,446.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.88 : 11,712.57 = 4,297.74 : x
  2. Step 2: Convert to fraction form
    7,808.88/11,712.57 = 4,297.74/x
  3. Step 3: Cross multiply
    7,808.88x = 11,712.57 × 4,297.74
  4. Step 4: Simplify right side
    7,808.88x = 50,337,520.55
  5. Step 5: Solve for x
    x = 50,337,520.55/7,808.88
  6. Step 6: Final answer
    x = 6,446.19

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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.