Home / 1,980.53-2,967.12-1,431.35

Finding the Fourth Proportional to 1,980.53, 2,967.12 and 1,431.35

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Solution

The fourth proportional to 1,980.53, 2,967.12 and 1,431.35 is: 2,144.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.53 : 2,967.12 = 1,431.35 : x
  2. Step 2: Convert to fraction form
    1,980.53/2,967.12 = 1,431.35/x
  3. Step 3: Cross multiply
    1,980.53x = 2,967.12 × 1,431.35
  4. Step 4: Simplify right side
    1,980.53x = 4,246,985.16
  5. Step 5: Solve for x
    x = 4,246,985.16/1,980.53
  6. Step 6: Final answer
    x = 2,144.37

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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.