Home / 1,789.02-2,681.37-812.97

Finding the Fourth Proportional to 1,789.02, 2,681.37 and 812.97

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Solution

The fourth proportional to 1,789.02, 2,681.37 and 812.97 is: 1,218.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.02 : 2,681.37 = 812.97 : x
  2. Step 2: Convert to fraction form
    1,789.02/2,681.37 = 812.97/x
  3. Step 3: Cross multiply
    1,789.02x = 2,681.37 × 812.97
  4. Step 4: Simplify right side
    1,789.02x = 2,179,873.37
  5. Step 5: Solve for x
    x = 2,179,873.37/1,789.02
  6. Step 6: Final answer
    x = 1,218.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.