Home / 8,455.20-12,678.54-2,611.08

Finding the Fourth Proportional to 8,455.20, 12,678.54 and 2,611.08

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Solution

The fourth proportional to 8,455.20, 12,678.54 and 2,611.08 is: 3,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.20 : 12,678.54 = 2,611.08 : x
  2. Step 2: Convert to fraction form
    8,455.20/12,678.54 = 2,611.08/x
  3. Step 3: Cross multiply
    8,455.20x = 12,678.54 × 2,611.08
  4. Step 4: Simplify right side
    8,455.20x = 33,104,682.22
  5. Step 5: Solve for x
    x = 33,104,682.22/8,455.20
  6. Step 6: Final answer
    x = 3,915.30

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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.