Home / 2,918.40-4,027.20-1,676.16

Finding the Fourth Proportional to 2,918.40, 4,027.20 and 1,676.16

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Solution

The fourth proportional to 2,918.40, 4,027.20 and 1,676.16 is: 2,312.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.40 : 4,027.20 = 1,676.16 : x
  2. Step 2: Convert to fraction form
    2,918.40/4,027.20 = 1,676.16/x
  3. Step 3: Cross multiply
    2,918.40x = 4,027.20 × 1,676.16
  4. Step 4: Simplify right side
    2,918.40x = 6,750,231.55
  5. Step 5: Solve for x
    x = 6,750,231.55/2,918.40
  6. Step 6: Final answer
    x = 2,312.99

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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.