Home / 1,987.08-2,743.14-1,360.92

Finding the Fourth Proportional to 1,987.08, 2,743.14 and 1,360.92

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Solution

The fourth proportional to 1,987.08, 2,743.14 and 1,360.92 is: 1,878.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.08 : 2,743.14 = 1,360.92 : x
  2. Step 2: Convert to fraction form
    1,987.08/2,743.14 = 1,360.92/x
  3. Step 3: Cross multiply
    1,987.08x = 2,743.14 × 1,360.92
  4. Step 4: Simplify right side
    1,987.08x = 3,733,194.09
  5. Step 5: Solve for x
    x = 3,733,194.09/1,987.08
  6. Step 6: Final answer
    x = 1,878.73

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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.