Home / 5,621.50-7,757.70-3,137.50

Finding the Fourth Proportional to 5,621.50, 7,757.70 and 3,137.50

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Solution

The fourth proportional to 5,621.50, 7,757.70 and 3,137.50 is: 4,329.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.50 : 7,757.70 = 3,137.50 : x
  2. Step 2: Convert to fraction form
    5,621.50/7,757.70 = 3,137.50/x
  3. Step 3: Cross multiply
    5,621.50x = 7,757.70 × 3,137.50
  4. Step 4: Simplify right side
    5,621.50x = 24,339,783.75
  5. Step 5: Solve for x
    x = 24,339,783.75/5,621.50
  6. Step 6: Final answer
    x = 4,329.77

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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.