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Finding the Fourth Proportional to 8,610.39, 12,903.42 and 3,678.30

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Solution

The fourth proportional to 8,610.39, 12,903.42 and 3,678.30 is: 5,512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.39 : 12,903.42 = 3,678.30 : x
  2. Step 2: Convert to fraction form
    8,610.39/12,903.42 = 3,678.30/x
  3. Step 3: Cross multiply
    8,610.39x = 12,903.42 × 3,678.30
  4. Step 4: Simplify right side
    8,610.39x = 47,462,649.79
  5. Step 5: Solve for x
    x = 47,462,649.79/8,610.39
  6. Step 6: Final answer
    x = 5,512.25

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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.