Home / 2,282.10-3,149.64-1,287.47

Finding the Fourth Proportional to 2,282.10, 3,149.64 and 1,287.47

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Solution

The fourth proportional to 2,282.10, 3,149.64 and 1,287.47 is: 1,776.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,282.10 : 3,149.64 = 1,287.47 : x
  2. Step 2: Convert to fraction form
    2,282.10/3,149.64 = 1,287.47/x
  3. Step 3: Cross multiply
    2,282.10x = 3,149.64 × 1,287.47
  4. Step 4: Simplify right side
    2,282.10x = 4,055,051.26
  5. Step 5: Solve for x
    x = 4,055,051.26/2,282.10
  6. Step 6: Final answer
    x = 1,776.89

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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.