Home / 11,905.62-17,856.40-3,140.62

Finding the Fourth Proportional to 11,905.62, 17,856.40 and 3,140.62

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Solution

The fourth proportional to 11,905.62, 17,856.40 and 3,140.62 is: 4,710.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.62 : 17,856.40 = 3,140.62 : x
  2. Step 2: Convert to fraction form
    11,905.62/17,856.40 = 3,140.62/x
  3. Step 3: Cross multiply
    11,905.62x = 17,856.40 × 3,140.62
  4. Step 4: Simplify right side
    11,905.62x = 56,080,166.97
  5. Step 5: Solve for x
    x = 56,080,166.97/11,905.62
  6. Step 6: Final answer
    x = 4,710.39

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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.