Home / 5,137.79-7,090.16-2,779.93

Finding the Fourth Proportional to 5,137.79, 7,090.16 and 2,779.93

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Solution

The fourth proportional to 5,137.79, 7,090.16 and 2,779.93 is: 3,836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.79 : 7,090.16 = 2,779.93 : x
  2. Step 2: Convert to fraction form
    5,137.79/7,090.16 = 2,779.93/x
  3. Step 3: Cross multiply
    5,137.79x = 7,090.16 × 2,779.93
  4. Step 4: Simplify right side
    5,137.79x = 19,710,131.33
  5. Step 5: Solve for x
    x = 19,710,131.33/5,137.79
  6. Step 6: Final answer
    x = 3,836.31

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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.