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Finding the Fourth Proportional to 10,878.77, 16,310.18 and 3,478.97

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Solution

The fourth proportional to 10,878.77, 16,310.18 and 3,478.97 is: 5,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.77 : 16,310.18 = 3,478.97 : x
  2. Step 2: Convert to fraction form
    10,878.77/16,310.18 = 3,478.97/x
  3. Step 3: Cross multiply
    10,878.77x = 16,310.18 × 3,478.97
  4. Step 4: Simplify right side
    10,878.77x = 56,742,676.39
  5. Step 5: Solve for x
    x = 56,742,676.39/10,878.77
  6. Step 6: Final answer
    x = 5,215.91

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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.