Home / 5,261.31-7,260.71-3,138.30

Finding the Fourth Proportional to 5,261.31, 7,260.71 and 3,138.30

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Solution

The fourth proportional to 5,261.31, 7,260.71 and 3,138.30 is: 4,330.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.31 : 7,260.71 = 3,138.30 : x
  2. Step 2: Convert to fraction form
    5,261.31/7,260.71 = 3,138.30/x
  3. Step 3: Cross multiply
    5,261.31x = 7,260.71 × 3,138.30
  4. Step 4: Simplify right side
    5,261.31x = 22,786,270.50
  5. Step 5: Solve for x
    x = 22,786,270.50/5,261.31
  6. Step 6: Final answer
    x = 4,330.91

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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.