Home / 1,821.21-2,513.34-1,035.25

Finding the Fourth Proportional to 1,821.21, 2,513.34 and 1,035.25

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Solution

The fourth proportional to 1,821.21, 2,513.34 and 1,035.25 is: 1,428.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.21 : 2,513.34 = 1,035.25 : x
  2. Step 2: Convert to fraction form
    1,821.21/2,513.34 = 1,035.25/x
  3. Step 3: Cross multiply
    1,821.21x = 2,513.34 × 1,035.25
  4. Step 4: Simplify right side
    1,821.21x = 2,601,935.24
  5. Step 5: Solve for x
    x = 2,601,935.24/1,821.21
  6. Step 6: Final answer
    x = 1,428.68

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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.