Home / 8,455.79-12,685.05-2,611.03

Finding the Fourth Proportional to 8,455.79, 12,685.05 and 2,611.03

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Solution

The fourth proportional to 8,455.79, 12,685.05 and 2,611.03 is: 3,916.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.79 : 12,685.05 = 2,611.03 : x
  2. Step 2: Convert to fraction form
    8,455.79/12,685.05 = 2,611.03/x
  3. Step 3: Cross multiply
    8,455.79x = 12,685.05 × 2,611.03
  4. Step 4: Simplify right side
    8,455.79x = 33,121,046.10
  5. Step 5: Solve for x
    x = 33,121,046.10/8,455.79
  6. Step 6: Final answer
    x = 3,916.97

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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.