Home / 1,988.50-2,979.36-1,354.07

Finding the Fourth Proportional to 1,988.50, 2,979.36 and 1,354.07

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Solution

The fourth proportional to 1,988.50, 2,979.36 and 1,354.07 is: 2,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.50 : 2,979.36 = 1,354.07 : x
  2. Step 2: Convert to fraction form
    1,988.50/2,979.36 = 1,354.07/x
  3. Step 3: Cross multiply
    1,988.50x = 2,979.36 × 1,354.07
  4. Step 4: Simplify right side
    1,988.50x = 4,034,262.00
  5. Step 5: Solve for x
    x = 4,034,262.00/1,988.50
  6. Step 6: Final answer
    x = 2,028.80

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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.