Home / 2,679.02-4,016.28-1,291.40

Finding the Fourth Proportional to 2,679.02, 4,016.28 and 1,291.40

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Solution

The fourth proportional to 2,679.02, 4,016.28 and 1,291.40 is: 1,936.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.02 : 4,016.28 = 1,291.40 : x
  2. Step 2: Convert to fraction form
    2,679.02/4,016.28 = 1,291.40/x
  3. Step 3: Cross multiply
    2,679.02x = 4,016.28 × 1,291.40
  4. Step 4: Simplify right side
    2,679.02x = 5,186,623.99
  5. Step 5: Solve for x
    x = 5,186,623.99/2,679.02
  6. Step 6: Final answer
    x = 1,936.02

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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.