Home / 1,985.50-2,979.60-1,012.26

Finding the Fourth Proportional to 1,985.50, 2,979.60 and 1,012.26

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Solution

The fourth proportional to 1,985.50, 2,979.60 and 1,012.26 is: 1,519.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.50 : 2,979.60 = 1,012.26 : x
  2. Step 2: Convert to fraction form
    1,985.50/2,979.60 = 1,012.26/x
  3. Step 3: Cross multiply
    1,985.50x = 2,979.60 × 1,012.26
  4. Step 4: Simplify right side
    1,985.50x = 3,016,129.90
  5. Step 5: Solve for x
    x = 3,016,129.90/1,985.50
  6. Step 6: Final answer
    x = 1,519.08

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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.