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Finding the Fourth Proportional to 8,309.90, 12,452.70 and 7,070.60

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Solution

The fourth proportional to 8,309.90, 12,452.70 and 7,070.60 is: 10,595.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.90 : 12,452.70 = 7,070.60 : x
  2. Step 2: Convert to fraction form
    8,309.90/12,452.70 = 7,070.60/x
  3. Step 3: Cross multiply
    8,309.90x = 12,452.70 × 7,070.60
  4. Step 4: Simplify right side
    8,309.90x = 88,048,060.62
  5. Step 5: Solve for x
    x = 88,048,060.62/8,309.90
  6. Step 6: Final answer
    x = 10,595.56

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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.