Home / 5,740-7,919.98-3,381.28

Finding the Fourth Proportional to 5,740, 7,919.98 and 3,381.28

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Solution

The fourth proportional to 5,740, 7,919.98 and 3,381.28 is: 4,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,740 : 7,919.98 = 3,381.28 : x
  2. Step 2: Convert to fraction form
    5,740/7,919.98 = 3,381.28/x
  3. Step 3: Cross multiply
    5,740x = 7,919.98 × 3,381.28
  4. Step 4: Simplify right side
    5,740x = 26,779,669.97
  5. Step 5: Solve for x
    x = 26,779,669.97/5,740
  6. Step 6: Final answer
    x = 4,665.45

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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.