Home / 1,975.11-2,723.90-1,275.75

Finding the Fourth Proportional to 1,975.11, 2,723.90 and 1,275.75

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Solution

The fourth proportional to 1,975.11, 2,723.90 and 1,275.75 is: 1,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.11 : 2,723.90 = 1,275.75 : x
  2. Step 2: Convert to fraction form
    1,975.11/2,723.90 = 1,275.75/x
  3. Step 3: Cross multiply
    1,975.11x = 2,723.90 × 1,275.75
  4. Step 4: Simplify right side
    1,975.11x = 3,475,009.05
  5. Step 5: Solve for x
    x = 3,475,009.05/1,975.11
  6. Step 6: Final answer
    x = 1,759.40

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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.