Home / 1,987.18-2,743.44-1,325.14

Finding the Fourth Proportional to 1,987.18, 2,743.44 and 1,325.14

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Solution

The fourth proportional to 1,987.18, 2,743.44 and 1,325.14 is: 1,829.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.18 : 2,743.44 = 1,325.14 : x
  2. Step 2: Convert to fraction form
    1,987.18/2,743.44 = 1,325.14/x
  3. Step 3: Cross multiply
    1,987.18x = 2,743.44 × 1,325.14
  4. Step 4: Simplify right side
    1,987.18x = 3,635,442.08
  5. Step 5: Solve for x
    x = 3,635,442.08/1,987.18
  6. Step 6: Final answer
    x = 1,829.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.