Home / 10,905.03-16,362.40-3,977.91

Finding the Fourth Proportional to 10,905.03, 16,362.40 and 3,977.91

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Solution

The fourth proportional to 10,905.03, 16,362.40 and 3,977.91 is: 5,968.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.03 : 16,362.40 = 3,977.91 : x
  2. Step 2: Convert to fraction form
    10,905.03/16,362.40 = 3,977.91/x
  3. Step 3: Cross multiply
    10,905.03x = 16,362.40 × 3,977.91
  4. Step 4: Simplify right side
    10,905.03x = 65,088,154.58
  5. Step 5: Solve for x
    x = 65,088,154.58/10,905.03
  6. Step 6: Final answer
    x = 5,968.64

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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.