Home / 1,380.39-2,068.74-1,150.74

Finding the Fourth Proportional to 1,380.39, 2,068.74 and 1,150.74

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Solution

The fourth proportional to 1,380.39, 2,068.74 and 1,150.74 is: 1,724.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380.39 : 2,068.74 = 1,150.74 : x
  2. Step 2: Convert to fraction form
    1,380.39/2,068.74 = 1,150.74/x
  3. Step 3: Cross multiply
    1,380.39x = 2,068.74 × 1,150.74
  4. Step 4: Simplify right side
    1,380.39x = 2,380,581.87
  5. Step 5: Solve for x
    x = 2,380,581.87/1,380.39
  6. Step 6: Final answer
    x = 1,724.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.