Home / 1,322.14-1,821.59-1,108.57

Finding the Fourth Proportional to 1,322.14, 1,821.59 and 1,108.57

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Solution

The fourth proportional to 1,322.14, 1,821.59 and 1,108.57 is: 1,527.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.14 : 1,821.59 = 1,108.57 : x
  2. Step 2: Convert to fraction form
    1,322.14/1,821.59 = 1,108.57/x
  3. Step 3: Cross multiply
    1,322.14x = 1,821.59 × 1,108.57
  4. Step 4: Simplify right side
    1,322.14x = 2,019,360.03
  5. Step 5: Solve for x
    x = 2,019,360.03/1,322.14
  6. Step 6: Final answer
    x = 1,527.34

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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.