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Finding the Fourth Proportional to 8,400.70, 12,602.13 and 2,556.55

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Solution

The fourth proportional to 8,400.70, 12,602.13 and 2,556.55 is: 3,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.70 : 12,602.13 = 2,556.55 : x
  2. Step 2: Convert to fraction form
    8,400.70/12,602.13 = 2,556.55/x
  3. Step 3: Cross multiply
    8,400.70x = 12,602.13 × 2,556.55
  4. Step 4: Simplify right side
    8,400.70x = 32,217,975.45
  5. Step 5: Solve for x
    x = 32,217,975.45/8,400.70
  6. Step 6: Final answer
    x = 3,835.15

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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.