Home / 1,513.21-2,083.40-1,291.27

Finding the Fourth Proportional to 1,513.21, 2,083.40 and 1,291.27

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Solution

The fourth proportional to 1,513.21, 2,083.40 and 1,291.27 is: 1,777.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.21 : 2,083.40 = 1,291.27 : x
  2. Step 2: Convert to fraction form
    1,513.21/2,083.40 = 1,291.27/x
  3. Step 3: Cross multiply
    1,513.21x = 2,083.40 × 1,291.27
  4. Step 4: Simplify right side
    1,513.21x = 2,690,225.10
  5. Step 5: Solve for x
    x = 2,690,225.10/1,513.21
  6. Step 6: Final answer
    x = 1,777.83

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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.