Home / 2,679.40-4,013.70-1,858.60

Finding the Fourth Proportional to 2,679.40, 4,013.70 and 1,858.60

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Solution

The fourth proportional to 2,679.40, 4,013.70 and 1,858.60 is: 2,784.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.40 : 4,013.70 = 1,858.60 : x
  2. Step 2: Convert to fraction form
    2,679.40/4,013.70 = 1,858.60/x
  3. Step 3: Cross multiply
    2,679.40x = 4,013.70 × 1,858.60
  4. Step 4: Simplify right side
    2,679.40x = 7,459,862.82
  5. Step 5: Solve for x
    x = 7,459,862.82/2,679.40
  6. Step 6: Final answer
    x = 2,784.15

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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.