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Finding the Fourth Proportional to 8,678.53, 13,018.40 and 3,484.41

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Solution

The fourth proportional to 8,678.53, 13,018.40 and 3,484.41 is: 5,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.53 : 13,018.40 = 3,484.41 : x
  2. Step 2: Convert to fraction form
    8,678.53/13,018.40 = 3,484.41/x
  3. Step 3: Cross multiply
    8,678.53x = 13,018.40 × 3,484.41
  4. Step 4: Simplify right side
    8,678.53x = 45,361,409.57
  5. Step 5: Solve for x
    x = 45,361,409.57/8,678.53
  6. Step 6: Final answer
    x = 5,226.85

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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.