Home / 5,377.44-7,420.68-3,139.38

Finding the Fourth Proportional to 5,377.44, 7,420.68 and 3,139.38

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Solution

The fourth proportional to 5,377.44, 7,420.68 and 3,139.38 is: 4,332.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.44 : 7,420.68 = 3,139.38 : x
  2. Step 2: Convert to fraction form
    5,377.44/7,420.68 = 3,139.38/x
  3. Step 3: Cross multiply
    5,377.44x = 7,420.68 × 3,139.38
  4. Step 4: Simplify right side
    5,377.44x = 23,296,334.38
  5. Step 5: Solve for x
    x = 23,296,334.38/5,377.44
  6. Step 6: Final answer
    x = 4,332.24

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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.