Home / 1,985.62-2,979.48-1,442.29

Finding the Fourth Proportional to 1,985.62, 2,979.48 and 1,442.29

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Solution

The fourth proportional to 1,985.62, 2,979.48 and 1,442.29 is: 2,164.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.62 : 2,979.48 = 1,442.29 : x
  2. Step 2: Convert to fraction form
    1,985.62/2,979.48 = 1,442.29/x
  3. Step 3: Cross multiply
    1,985.62x = 2,979.48 × 1,442.29
  4. Step 4: Simplify right side
    1,985.62x = 4,297,274.21
  5. Step 5: Solve for x
    x = 4,297,274.21/1,985.62
  6. Step 6: Final answer
    x = 2,164.20

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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.