Home / 1,986.04-2,979.48-1,254.76

Finding the Fourth Proportional to 1,986.04, 2,979.48 and 1,254.76

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Solution

The fourth proportional to 1,986.04, 2,979.48 and 1,254.76 is: 1,882.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.04 : 2,979.48 = 1,254.76 : x
  2. Step 2: Convert to fraction form
    1,986.04/2,979.48 = 1,254.76/x
  3. Step 3: Cross multiply
    1,986.04x = 2,979.48 × 1,254.76
  4. Step 4: Simplify right side
    1,986.04x = 3,738,532.32
  5. Step 5: Solve for x
    x = 3,738,532.32/1,986.04
  6. Step 6: Final answer
    x = 1,882.41

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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.