Home / 1,821.12-2,513.16-1,035.22

Finding the Fourth Proportional to 1,821.12, 2,513.16 and 1,035.22

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Solution

The fourth proportional to 1,821.12, 2,513.16 and 1,035.22 is: 1,428.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.12 : 2,513.16 = 1,035.22 : x
  2. Step 2: Convert to fraction form
    1,821.12/2,513.16 = 1,035.22/x
  3. Step 3: Cross multiply
    1,821.12x = 2,513.16 × 1,035.22
  4. Step 4: Simplify right side
    1,821.12x = 2,601,673.50
  5. Step 5: Solve for x
    x = 2,601,673.50/1,821.12
  6. Step 6: Final answer
    x = 1,428.61

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1.5x scale

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.