Home / 2,114.70-2,917.80-1,275.12

Finding the Fourth Proportional to 2,114.70, 2,917.80 and 1,275.12

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Solution

The fourth proportional to 2,114.70, 2,917.80 and 1,275.12 is: 1,759.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.70 : 2,917.80 = 1,275.12 : x
  2. Step 2: Convert to fraction form
    2,114.70/2,917.80 = 1,275.12/x
  3. Step 3: Cross multiply
    2,114.70x = 2,917.80 × 1,275.12
  4. Step 4: Simplify right side
    2,114.70x = 3,720,545.14
  5. Step 5: Solve for x
    x = 3,720,545.14/2,114.70
  6. Step 6: Final answer
    x = 1,759.37

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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.