Home / 1,514.25-2,089.85-991.44

Finding the Fourth Proportional to 1,514.25, 2,089.85 and 991.44

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Solution

The fourth proportional to 1,514.25, 2,089.85 and 991.44 is: 1,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,514.25 : 2,089.85 = 991.44 : x
  2. Step 2: Convert to fraction form
    1,514.25/2,089.85 = 991.44/x
  3. Step 3: Cross multiply
    1,514.25x = 2,089.85 × 991.44
  4. Step 4: Simplify right side
    1,514.25x = 2,071,955.93
  5. Step 5: Solve for x
    x = 2,071,955.93/1,514.25
  6. Step 6: Final answer
    x = 1,368.31

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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.