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Finding the Fourth Proportional to 1,979.78, 2,969.78 and 592.97

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Solution

The fourth proportional to 1,979.78, 2,969.78 and 592.97 is: 889.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.78 : 2,969.78 = 592.97 : x
  2. Step 2: Convert to fraction form
    1,979.78/2,969.78 = 592.97/x
  3. Step 3: Cross multiply
    1,979.78x = 2,969.78 × 592.97
  4. Step 4: Simplify right side
    1,979.78x = 1,760,990.45
  5. Step 5: Solve for x
    x = 1,760,990.45/1,979.78
  6. Step 6: Final answer
    x = 889.49

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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.