Home / 5,139.68-7,089.60-3,043.28

Finding the Fourth Proportional to 5,139.68, 7,089.60 and 3,043.28

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Solution

The fourth proportional to 5,139.68, 7,089.60 and 3,043.28 is: 4,197.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.68 : 7,089.60 = 3,043.28 : x
  2. Step 2: Convert to fraction form
    5,139.68/7,089.60 = 3,043.28/x
  3. Step 3: Cross multiply
    5,139.68x = 7,089.60 × 3,043.28
  4. Step 4: Simplify right side
    5,139.68x = 21,575,637.89
  5. Step 5: Solve for x
    x = 21,575,637.89/5,139.68
  6. Step 6: Final answer
    x = 4,197.86

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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.