Home / 1,282.65-1,771.38-1,275.36

Finding the Fourth Proportional to 1,282.65, 1,771.38 and 1,275.36

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Solution

The fourth proportional to 1,282.65, 1,771.38 and 1,275.36 is: 1,761.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.65 : 1,771.38 = 1,275.36 : x
  2. Step 2: Convert to fraction form
    1,282.65/1,771.38 = 1,275.36/x
  3. Step 3: Cross multiply
    1,282.65x = 1,771.38 × 1,275.36
  4. Step 4: Simplify right side
    1,282.65x = 2,259,147.20
  5. Step 5: Solve for x
    x = 2,259,147.20/1,282.65
  6. Step 6: Final answer
    x = 1,761.31

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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.