Home / 1,975.39-2,725.90-1,091.17

Finding the Fourth Proportional to 1,975.39, 2,725.90 and 1,091.17

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Solution

The fourth proportional to 1,975.39, 2,725.90 and 1,091.17 is: 1,505.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.39 : 2,725.90 = 1,091.17 : x
  2. Step 2: Convert to fraction form
    1,975.39/2,725.90 = 1,091.17/x
  3. Step 3: Cross multiply
    1,975.39x = 2,725.90 × 1,091.17
  4. Step 4: Simplify right side
    1,975.39x = 2,974,427.12
  5. Step 5: Solve for x
    x = 2,974,427.12/1,975.39
  6. Step 6: Final answer
    x = 1,505.74

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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.