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Finding the Fourth Proportional to 8,513.60, 12,770.39 and 2,670.66

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Solution

The fourth proportional to 8,513.60, 12,770.39 and 2,670.66 is: 4,005.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,513.60 : 12,770.39 = 2,670.66 : x
  2. Step 2: Convert to fraction form
    8,513.60/12,770.39 = 2,670.66/x
  3. Step 3: Cross multiply
    8,513.60x = 12,770.39 × 2,670.66
  4. Step 4: Simplify right side
    8,513.60x = 34,105,356.40
  5. Step 5: Solve for x
    x = 34,105,356.40/8,513.60
  6. Step 6: Final answer
    x = 4,005.99

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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.