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Finding the Fourth Proportional to 8,452.74, 12,675.87 and 2,905.05

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Solution

The fourth proportional to 8,452.74, 12,675.87 and 2,905.05 is: 4,356.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,452.74 : 12,675.87 = 2,905.05 : x
  2. Step 2: Convert to fraction form
    8,452.74/12,675.87 = 2,905.05/x
  3. Step 3: Cross multiply
    8,452.74x = 12,675.87 × 2,905.05
  4. Step 4: Simplify right side
    8,452.74x = 36,824,036.14
  5. Step 5: Solve for x
    x = 36,824,036.14/8,452.74
  6. Step 6: Final answer
    x = 4,356.46

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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.