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Finding the Fourth Proportional to 1,729.93, 2,387.49 and 984.07

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Solution

The fourth proportional to 1,729.93, 2,387.49 and 984.07 is: 1,358.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.93 : 2,387.49 = 984.07 : x
  2. Step 2: Convert to fraction form
    1,729.93/2,387.49 = 984.07/x
  3. Step 3: Cross multiply
    1,729.93x = 2,387.49 × 984.07
  4. Step 4: Simplify right side
    1,729.93x = 2,349,457.28
  5. Step 5: Solve for x
    x = 2,349,457.28/1,729.93
  6. Step 6: Final answer
    x = 1,358.12

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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.