Home / 4,267.78-5,890.29-3,390.28

Finding the Fourth Proportional to 4,267.78, 5,890.29 and 3,390.28

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Solution

The fourth proportional to 4,267.78, 5,890.29 and 3,390.28 is: 4,679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,267.78 : 5,890.29 = 3,390.28 : x
  2. Step 2: Convert to fraction form
    4,267.78/5,890.29 = 3,390.28/x
  3. Step 3: Cross multiply
    4,267.78x = 5,890.29 × 3,390.28
  4. Step 4: Simplify right side
    4,267.78x = 19,969,732.38
  5. Step 5: Solve for x
    x = 19,969,732.38/4,267.78
  6. Step 6: Final answer
    x = 4,679.19

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1.5x scale

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.