Home / 1,291.01-1,937.28-1,186.44

Finding the Fourth Proportional to 1,291.01, 1,937.28 and 1,186.44

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Solution

The fourth proportional to 1,291.01, 1,937.28 and 1,186.44 is: 1,780.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.01 : 1,937.28 = 1,186.44 : x
  2. Step 2: Convert to fraction form
    1,291.01/1,937.28 = 1,186.44/x
  3. Step 3: Cross multiply
    1,291.01x = 1,937.28 × 1,186.44
  4. Step 4: Simplify right side
    1,291.01x = 2,298,466.48
  5. Step 5: Solve for x
    x = 2,298,466.48/1,291.01
  6. Step 6: Final answer
    x = 1,780.37

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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.