Home / 10,808.40-16,202.80-3,881.28

Finding the Fourth Proportional to 10,808.40, 16,202.80 and 3,881.28

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Solution

The fourth proportional to 10,808.40, 16,202.80 and 3,881.28 is: 5,818.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.40 : 16,202.80 = 3,881.28 : x
  2. Step 2: Convert to fraction form
    10,808.40/16,202.80 = 3,881.28/x
  3. Step 3: Cross multiply
    10,808.40x = 16,202.80 × 3,881.28
  4. Step 4: Simplify right side
    10,808.40x = 62,887,603.58
  5. Step 5: Solve for x
    x = 62,887,603.58/10,808.40
  6. Step 6: Final answer
    x = 5,818.40

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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.