Home / 3,918.38-5,407.34-2,426

Finding the Fourth Proportional to 3,918.38, 5,407.34 and 2,426

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Solution

The fourth proportional to 3,918.38, 5,407.34 and 2,426 is: 3,347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.38 : 5,407.34 = 2,426 : x
  2. Step 2: Convert to fraction form
    3,918.38/5,407.34 = 2,426/x
  3. Step 3: Cross multiply
    3,918.38x = 5,407.34 × 2,426
  4. Step 4: Simplify right side
    3,918.38x = 13,118,206.84
  5. Step 5: Solve for x
    x = 13,118,206.84/3,918.38
  6. Step 6: Final answer
    x = 3,347.86

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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.