Home / 10,780.90-16,171.35-3,386.00

Finding the Fourth Proportional to 10,780.90, 16,171.35 and 3,386.00

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Solution

The fourth proportional to 10,780.90, 16,171.35 and 3,386.00 is: 5,079.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.90 : 16,171.35 = 3,386.00 : x
  2. Step 2: Convert to fraction form
    10,780.90/16,171.35 = 3,386.00/x
  3. Step 3: Cross multiply
    10,780.90x = 16,171.35 × 3,386.00
  4. Step 4: Simplify right side
    10,780.90x = 54,756,218.83
  5. Step 5: Solve for x
    x = 54,756,218.83/10,780.90
  6. Step 6: Final answer
    x = 5,079.00

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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.