Home / 5,261.55-7,261.87-3,137.21

Finding the Fourth Proportional to 5,261.55, 7,261.87 and 3,137.21

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Solution

The fourth proportional to 5,261.55, 7,261.87 and 3,137.21 is: 4,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.55 : 7,261.87 = 3,137.21 : x
  2. Step 2: Convert to fraction form
    5,261.55/7,261.87 = 3,137.21/x
  3. Step 3: Cross multiply
    5,261.55x = 7,261.87 × 3,137.21
  4. Step 4: Simplify right side
    5,261.55x = 22,782,011.18
  5. Step 5: Solve for x
    x = 22,782,011.18/5,261.55
  6. Step 6: Final answer
    x = 4,329.90

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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.