Home / 3,918.02-5,406.18-2,239.16

Finding the Fourth Proportional to 3,918.02, 5,406.18 and 2,239.16

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Solution

The fourth proportional to 3,918.02, 5,406.18 and 2,239.16 is: 3,089.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.02 : 5,406.18 = 2,239.16 : x
  2. Step 2: Convert to fraction form
    3,918.02/5,406.18 = 2,239.16/x
  3. Step 3: Cross multiply
    3,918.02x = 5,406.18 × 2,239.16
  4. Step 4: Simplify right side
    3,918.02x = 12,105,274.98
  5. Step 5: Solve for x
    x = 12,105,274.98/3,918.02
  6. Step 6: Final answer
    x = 3,089.64

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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.