Home / 5,137.78-7,090.10-2,779.96

Finding the Fourth Proportional to 5,137.78, 7,090.10 and 2,779.96

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Solution

The fourth proportional to 5,137.78, 7,090.10 and 2,779.96 is: 3,836.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.78 : 7,090.10 = 2,779.96 : x
  2. Step 2: Convert to fraction form
    5,137.78/7,090.10 = 2,779.96/x
  3. Step 3: Cross multiply
    5,137.78x = 7,090.10 × 2,779.96
  4. Step 4: Simplify right side
    5,137.78x = 19,710,194.40
  5. Step 5: Solve for x
    x = 19,710,194.40/5,137.78
  6. Step 6: Final answer
    x = 3,836.33

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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.