Home / 6,621.45-9,138.47-4,270.42

Finding the Fourth Proportional to 6,621.45, 9,138.47 and 4,270.42

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Solution

The fourth proportional to 6,621.45, 9,138.47 and 4,270.42 is: 5,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.45 : 9,138.47 = 4,270.42 : x
  2. Step 2: Convert to fraction form
    6,621.45/9,138.47 = 4,270.42/x
  3. Step 3: Cross multiply
    6,621.45x = 9,138.47 × 4,270.42
  4. Step 4: Simplify right side
    6,621.45x = 39,025,119.15
  5. Step 5: Solve for x
    x = 39,025,119.15/6,621.45
  6. Step 6: Final answer
    x = 5,893.75

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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.