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Finding the Fourth Proportional to 8,407.64, 12,611.35 and 2,864.85

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Solution

The fourth proportional to 8,407.64, 12,611.35 and 2,864.85 is: 4,297.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.64 : 12,611.35 = 2,864.85 : x
  2. Step 2: Convert to fraction form
    8,407.64/12,611.35 = 2,864.85/x
  3. Step 3: Cross multiply
    8,407.64x = 12,611.35 × 2,864.85
  4. Step 4: Simplify right side
    8,407.64x = 36,129,618.89
  5. Step 5: Solve for x
    x = 36,129,618.89/8,407.64
  6. Step 6: Final answer
    x = 4,297.24

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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.