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Finding the Fourth Proportional to 8,451.74, 12,678.21 and 2,607.59

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Solution

The fourth proportional to 8,451.74, 12,678.21 and 2,607.59 is: 3,911.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.74 : 12,678.21 = 2,607.59 : x
  2. Step 2: Convert to fraction form
    8,451.74/12,678.21 = 2,607.59/x
  3. Step 3: Cross multiply
    8,451.74x = 12,678.21 × 2,607.59
  4. Step 4: Simplify right side
    8,451.74x = 33,059,510.22
  5. Step 5: Solve for x
    x = 33,059,510.22/8,451.74
  6. Step 6: Final answer
    x = 3,911.56

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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.