Home / 4,611.70-6,918.45-1,979.20

Finding the Fourth Proportional to 4,611.70, 6,918.45 and 1,979.20

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Solution

The fourth proportional to 4,611.70, 6,918.45 and 1,979.20 is: 2,969.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,611.70 : 6,918.45 = 1,979.20 : x
  2. Step 2: Convert to fraction form
    4,611.70/6,918.45 = 1,979.20/x
  3. Step 3: Cross multiply
    4,611.70x = 6,918.45 × 1,979.20
  4. Step 4: Simplify right side
    4,611.70x = 13,692,996.24
  5. Step 5: Solve for x
    x = 13,692,996.24/4,611.70
  6. Step 6: Final answer
    x = 2,969.19

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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.