Home / 1,821.12-2,512.48-1,074.81

Finding the Fourth Proportional to 1,821.12, 2,512.48 and 1,074.81

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Solution

The fourth proportional to 1,821.12, 2,512.48 and 1,074.81 is: 1,482.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.12 : 2,512.48 = 1,074.81 : x
  2. Step 2: Convert to fraction form
    1,821.12/2,512.48 = 1,074.81/x
  3. Step 3: Cross multiply
    1,821.12x = 2,512.48 × 1,074.81
  4. Step 4: Simplify right side
    1,821.12x = 2,700,438.63
  5. Step 5: Solve for x
    x = 2,700,438.63/1,821.12
  6. Step 6: Final answer
    x = 1,482.84

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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.